The little girl fell down and _______ her knee.

Five readers ______ the correct solution to our recent competition.

They are happily married although, of course they argue _______.

During the evening football match, the stadium was illuminated by ______.

Whenever we plan to go for a picnic, it ________ rains.

The students visited the museum and spent several hours with the ________, who was very

helpful.

There has been a great deal of ________ in the press about the results of the murder trial.

If you want a flat in the centre of the city, you have to pay through the ______ for it.

I didn’t suspect anything at first, but when I noticed her going through the office drawers, I

began to smell ________.

People who take on a second job inevitably _______ themselves to greater stress.

His poor handling of the business _________on negligence.

She says that unfortunately, in the _______ circumstances, she cannot afford to help us.

It has been established _________ dispute that this disease can be cured.

Despite all the interruptions, he ________ with his work.

________, the people who come to this club are in the twenties and thirties.

I’m ________ having to pay yet another visit to the dentist.

Sally has an _____ command of the French language.

We could have provided him with a detached house but he ________ asked for a small flat.

He was blinded by the _________ of the approaching car’s headlights.

Choose the best heading:

In the pitch-black waters of the ocean’s aphotic zone – depths from 1,000m to the sea floor – Rood eyesight does not count for very much on its own. Caves, in addition, frequently present a similar problem: the complete absence of natural light at any time of the day. This has not stopped some organisms from turning these inhospitable environments into their homes, and in the process many have created their own forms of light by developing one of the stunning visual marvels of the biological universe – bioluminescence.

Choose the best heading

Many people will encounter bioluminescence at some point in their life, typically in some form of glowworm, which is found on most continents. North and South America are home to the “firefly”, a glowing beetle which is known as a glow-worm during its larvae stage. Flightless glowing beetles and worms are also found in Europe, Asia, Australia, and New Zealand. Less common flies, centipedes, molluscs, and snails have bioluminescent qualities as well, as do some mushrooms. The most dramatic examples of bioluminescence, however, are found deep below the ocean’s surface, where no sunlight can penetrate at all. Here, anglerfish, cookie-cutter sharks, flashlight fish, lantern fish, gulper eels, viperfish, and many other species have developed bioluminescence in unique and creative ways to facilitate their lives.

Choose the best heading:

The natural uses of bioluminescence vary widely, and organisms have learnt to be very creative with its use. Fireflies employ bioluminescence primarily for reproductive means – their flashing patterns advertise a firefly’s readiness to breed. Some fish use it as a handy spotlight to help them locate prey. Others use it as a lure; the anglerfish, for example, dangles a luminescent flare that draws in gullible, smaller fishes which get snapped up by the anglerfish in an automated reflex. Sometimes, bioluminescence is used to resist predators. Vampire squids eject a thick cloud of glowing liquid from the tip of its arms when threatened, which can be disorientating. Other species use a single, bright flash to temporarily blind their attacker, with an effect similar to that of an oncoming car which has not dipped its headlights.

Choose the best heading:

Humans have captured and utilized bioluminescence by developing, over the last decade, a technology known as Bioluminescence Imaging (BLI). BU involves the extraction of a DNA protein from a bioluminescent organism, and then the integration of this protein into a laboratory animal through trans-geneticism. Researchers have been able to use luminized pathogens and cancer cell lines to track the respective spread of infections and cancers. Through BLI, cancers and infections can be observed without intervening in a way that affects their independent development. In other words, while an ultra-sensitive camera and bioluminescent proteins add a visual element, they do not disrupt or mutate the natural processes. As a result, when testing drugs and treatments, researchers are permitted a single perspective of a therapy’s progression.

Choose the best heading:

Once scientists learn how to engineer bioluminescence and keep it stable in large quantities, a number of other human uses for it will become available. Glowing trees have been proposed as replacements for electric lighting along busy roads, for example, which would reduce our dependence on non-renewable energy sources. The same technology used in Christmas trees for the family home would also eliminate the fire danger from electrical fairy lights. It may also be possible for crops and plants to luminesce when they require watering, and for meat and dairy products to “tell us” when they have become contaminated by bacteria. In a similar way, forensic investigators could detect bacterial species on corpses through bioluminescence. Finally, there is the element of pure novelty. Children’s toys and stickers are often made with glow-in-the dark qualities, and a biological form would allow rabbits, mice, fish, and other pets to glow as well.

Choose the word/ phrase that needs correction:

Each of the nurses report to the operating room when his or her name is called.

Choose the word/ phrase that needs correction:

The sates school system in England can be divided into two levels of educated: primary and secondary.

Choose the word/ phrase that needs correction:

Ours brains are incredibly agile machines, and it's hard to think of anything they do more efficient than recognize face.

Choose the word/ phrase that needs correction:

Species like snakes, lizards, coyotes, squirrels, and jack rabbits seems to exist quite happily in the desert.

Choose the word/ phrase that needs correction:

The developing of the submarine was hindered by the lack of a power source that could propel an underwater vessel.

Choose the word/ phrase that needs correction:

On the wedding day, the groom's family and relatives go to the bride’s house bring gifts wrapped in red papers.

Choose the word/ phrase that needs correction:

Today, although their status varies from country to country, women in most parts of the world have gained significance legal rights.

Choose the word/ phrase that needs correction:

More Asian students than American counterparts agree that a husband is obliged tell his wife where he has been if he comes home late.

Choose the word/ phrase that needs correction

The Red Cross organizes and leads relief assistance missions after natural disasters such as floods, tsunamis, earthquakes, and homelessness.