19.they were excited about the film

20.we often go to school by bike

C: 1.how far is it from your house to the nearest station?

2.where are the children playing football?

3.what will be powered by solar energy in the green future?

4.why we should reduce the use of fossil fuels?

D:  1.Turn off the lights before leaving the room to save energy

2.Most of poor people live in the slum, don't they?

E:     1.performance        2.cutural           3.celebration/celebratory            4.exciting     5.amazed        6.interesting/interested

19. They were excited about the film.

20. We often go to school by bike.

C. Make the questions for underlined parts:

1. How far is it from your house to the nearest bus station?

2. Where are the children playing football?

3. What will be powered by solar energy?

4. Why should we reduce the use of fosil fuels?

D. Rearrange the given words to make meaningful sentences

1. Turn off the lights before leaving the room to save energy.

2. Most of poor people live in the slum, don't they?

E. Give the right forms of the words in brackets:

1. performance

2. cultural

3. celebration/celebratory

4. exciting

5. amazed

6. interesting/interested

Xin ctlhn