8. The twins are not the same as each other in character..

　 The twins _______　 _______　 _______ each other in character.

7. These problems will cause damage to the environment.

　 These problems will _________　 ________　 _______________.

6. I like pears better than apples.

　 I ______　 ______　 ______　 ________.

5. This creates mountains of rubbish.

　 ___________________________________________________

4. Who are the writers of the book?

　 ___________________________________________________

3. It keeps much of the warmth from getting out.

　 ___________________________________________________.

2. What was the reason for the fire? _____________________________________

1. Tom is weaker than Peter.　 _________________________________________

10.As a green consumer, we should only buy and use ______________　 ____________　 things (环保物品).

9.The　 ________　 _________(温室效应) causes the level of seas to rise.