Many high school students volunteered to____ the polluted river.

It takes hundreds of years for one plastic bottle to ____ in the ground.

It's a long walk tomorrow. We need to_______ as early as possible.

The boys broke a window when they ...... football.

Ms. Trang ___ her time and energy to giving free English lessons for poor children.

He gave us a thrilling _____ of his experiences on the battlefield.

We are now living in an increasingly___ world thanks to globalisation.

Foreign tourists are fascinated by a wide variety of traditional Vietnamese___.

They____ extensive research on the environmental effects of using fake Christmas trees.

Many celebrities adopt a green lifestyle,_____ helps the environment a lot.

The future of our planet _____ how we deal with climate change.

Despite growing up in an orphanage, she always felt a strong connection to her ______ family, hoping to reunite with them someday.

After being _____ with a rare genetic disorder, he channeled his energy into raising awareness and funds for research.

The website gives brief ______ of some famous historical figures in Vietnam.

One of her _____ achievements is the discovery of radium and polonium.

The well is getting_____ polluted, forcing villagers to seek alternative clean water sources.

I _____ about him when suddenly he came in.

When I first saw Miriam, I ____ her to come in for tea and we talked for nearly two hours.

The girls were chatting ____ the boys were playing games.

Some people are concerned that celebrating foreign festivals can make people lose their sense of ____.

We may suffer from____ when we experience an unfamiliar culture for the first time.

The growing ____ of fast food goes hand in hand with several health problems.

Phở is _____ must-try dish when you travel to Vietnam.

It’s not a good idea to walk around at night in __________London.

I think Tet is _____ most fascinating festival in Vietnam.

What __ festivals do Vietnamese people celebrate?

Ms. Brown often uses leftovers to make her own ___.

Recyclable products should not be ended up in ______.

You can use fruit peels to make compost instead of ______ them.

She has been brought up by her grandparents since her ______ parents passed away.

Parents who are too busy with their work find it hard to ______ with their children.

Some species of rare animals are in ______ of extinction.

She has two brothers, ______ are engineers.

Organic waste such as fruit and vegetables can ______ more quickly than other materials.

She teaches the students to have respect for the different races and appreciate the ______ of their cultures.

There wasn't a chair for the headmaster, ______ is a big problem.

He found a well-paid job ______ he had no formal academic qualifications.

______ she was very hard-working, she hardly earned enough to feed her family.

We’re preparing ______ the Green Ideas competition, which will take place next week.

The city’s ______ needs upgrading to meet the demands from its citizens.

Youth crime in the inner city has increased in recent months, requiring tightened security. It has risen ______.

Air pollution and traffic congestion are two major ______ among city dwellers.

Traffic in ______ is a nightmare for commuters.

Many fresh graduates are struggling to ______ a nine-to-five job.

The municipal authority is implementing new policies to address affordable ______ shortages.

This is the first time Henry ______ Ho Chi Minh’s Mausoleum.

The well is getting ______ polluted, forcing villagers to seek alternative clean water sources.

The higher property prices are, ______ city dwellers can afford.

There are plenty of ______ activities available in the city, from parks to theatres.

The city plans to ______ its public transportation system next year.

Living downtown is ______ because everything is within walking distance.

The city is filled with ______ buildings that define its skyline.

There's a(n) ______ store on every corner, making it easy to buy essentials.

The city has many beautiful ______ constructions that attract tourists.

______ has rapidly transformed those small towns into bustling cities.

Housing is getting ______ in the central areas.

The quality of life ______ significantly since the new infrastructure was built.

The higher the unemployment rate is ______, people move to urban areas seeking jobs.

Cultural diversity supports the idea that every person can ______ a contribution to the larger society.