1.A

2.D

3.D

4.B

5.D

6.B

WRITING

1.My room is bigger than your room.

2.The doctor takes care of sick people.

3.How many rooms are there in your house ?

4.What a lovely bag !

5.At this time tomorrow, they will be studying in the library.

6.Solar energy will be used by many countries around the world.

7.I think biogas is abundant and cheap for cooking and heating.

8.The wind is renewable sourse of energy, isn't it ?

9.We will reduce the use of electricity to save our energy