The girls whom I spoke to ______________ very courteous and humble.

The old lady __________ not know the way and I can't help her either.

My brother and I __________ our school shoes every Saturday.

The pupils watched the animals ___________ many tricks at the zoo today.

Gerald _________ all his friend to his barbecue next Sunday.

The caretaker ___________ the corridor a moment ago.

The children _____________ not to use the fire extinguisher unless there is a fire.

The clerk __________ to reach Mr. Owen for the past two hours, but he could not be contacted.

The Boxer dog standing ___________ the gate looked so fierce that I decided not to go in.

Singing the national anthem is a sign of __________ of each citizen.

The students nodded ____________ in agreement when the teacher asked them for their response.

The lawyer tried his best to defend his __________ but his appeal was rejected.

The ___________ are studying the stars tonight with the help of this giant telescope at the observatory.

The students were advised to ______________extreme care in the handling of the chemicals.

Yuri who lives in the Russian city of Karabash, has two children, and they are both sick. He is worried but not surprised. " There are no healthy kids here", he explains. The people of Karabash are being poisoned. Every year, a local factory spews out 162,000 tons of pollutants into the air.

Yuri is not surprised that his kids are sick because ___________.

The air is no healthier in Mexico City. A survey by Dr. Margarita Castillejos found that even in a wealthy area of the city, the children were sick 4 days out of 5. " To be sick has become normal for them," she observed. One of the main causes is the pervasive smog produced by the thousands of vehicles that clog the city streets. Smog is dirty air that looks like smoke and fog mixed together.

Which phrase tells you that there are many vehicles in the streets of New Mexico?

In Australia the danger is invisible but just as deadly. Children now have to wear hats when playing in the school playground. The protective shield of ozone in the Southern Hemisphere has been largely destroyed.

The danger in Australia is invisible because ___________.

Hence, Australians begin to view the sun as an enemy rather than a friend. They have already seen a threefold increase in skin cancers.

The sun is now a foe to the Australians as it has ___________.

In other parts of the world, finding sufficient water is a daily battle. When Amalia was 13 years old, drought came to Mozambique. There was barely enough water for the first year and hardly any the following year. Vegetable crops withered and died. Amalia and her family were left with eating wild fruit and digging in sandy riverbeds for whatever precious water they could find.

The drought in Mozambique ____________.

Wherever you live and whoever you are, the weather affects your life. If the day promises to be hot and sunny, you put on light clothing. If it is cold, you reach for a coat and a hat. The weather can delight or disappoint us. Occasionally, it becomes a killer in the form of hurricanes, blizzards, or monsoons. The weather is always influencing our lives from the day we are born till the day we die.

How does the weather influences our lives?

Someone once said, " Everybody talks about the weather, but nobody does anything about it." Indeed, it has always seemed that the weather is beyond our power to change it. Increasingly, however, many scientists no longer believe that. They say that the spewing of carbon dioxide and other gases into our atmosphere is bringing about a change in our long-term weather pattern - our climate.

Which word means to flow out quickly in large amounts?

According to the experts, the earth's climate is becoming warmer. During the next century, if the things continue as they are, it is possible that the temperature could increase by as much as 35 degrees Celsius.

While a few extra degrees may not sound like much to worry about, a small temperature change in the world's climate could be disastrous.

Scientists now believe that the climate change is caused by ______________.

In some areas, droughts could become longer, while in others, rainfall could become heavier. Storms and floods could become more severe; hurricanes, more damaging.

Heat related illness and death could soar. According to the World Health Organization, global warming could also extend the range of insects bearing tropical diseases, such as malaria and dengue.

Which of the following will not occur in the coming years?

There will be a rise in sea levels. Those living in coastal areas would have to move unless costly projects were to be undertaken to hold back the sea. Some islands would be completely submerged.

What can be done to prevent lives from being destroyed in low-lying coastal areas?

The ____________ blew his whistle and declared the football game to be over.

The developer has just engaged James to be the ___________ to prepare plans and drawings for this new building.

As Mr. David does not know how to drive, he engages a ___________ to drive him around his important meetings.

The tourist gave the ____________ some tips for carrying his luggage at the hotel.

Christian took his sickly rabbit to the _____________ for treatment.

The rude boy __________ the door to express his insolence.

This plot of lot can't be sold to you but you can ____________ it for three years.

The pedestrians looked up at the airplane that passed ____________.

This flat has been ____________ against fire and theft.

He was ____________ for parking his car illegally.

In a workshop, the floor is constantly ____________ with sawdust to make it anti-skid.

Before you signed this agreement, pay careful ____________ to the fine print.

As a storm was _____________, we had to leave in a great hurry.

I was sick last week but now I'm ____________ of health.

Elisha emained totally calm and did not ____________ when she realized that she had lost her wallet.