CLOSEST

1. The area is roped off because the water is seriously polluted.

• contaminated          

• disappeared

• purified         

• endangered

2. All fossil fuels are resources that cannot be replaced after use.

• unlimited

• renewable

• available

• non-renewable

3. Many organizations have been set up and funds have been raised.                                         

• established

• collapsed

• delayed

• decreased

4. Water energy is used to create electricity.

• produce

• design

• operate

• heat

5. Discharging chemical pollutants into the environment is a cruel action to the environment as well as the future generation.

• Releasing

• Filling

• Making

• Adding

6. Some experts advise that student should take advantage of their smartphones to have fun and good learning results.

• take care of

• make use of

• make fun of

• take photos of

7. It is important to maintain the biological diversity of the rainforests.

• similarity

• identity

• variety

• compatibility

8. Reusing and recycling glass, plastic, paper and other products help to reduce waste and pollution, and conserve natural resources.

• preserve  

• reserve

• converse

• reverse

9. Online learning may not be effective if students have problems with the Internet.

• a way of learning that happens on the Internet

• a way of learning that happens in the classroom

• a way of learning that happens face- to- face

• a way of learning that happens directly with teacher

10. By travelling by plane, tourists can reduce the negative impact of their travel on the environment.

• influence

• focus

• affect

• not harm