II.Rewrite the sentences, beginning as shown, so that the meaning stays the same 

1.I have more storybooks than my sister does.

-->My sister has...........

2.My friends have more music CD's than I do.

-->I have...........

3.My brother drinks more coffee than my sister does

--> My sister drinks.........

4.She eats more chocolate than I do

-->I eat..........

5.She has less homework to do than he does

-->He has..........

I.Put a tag questions at the end of the sentences 

1.Life can become very difficult and unpleasant in big cities,__________?

2.They world will soon become overpopulated,_____________?

3.You haven't gone to Rio de Janeiro,______________?

4.They didn't like the film,________?

5.We don't have to go yet,_____________?

6.You don't like pollution,_______________?

7.You won't tell anyone,__________________?

8.You're waiting for your letter,____________?

9.It's hot today,____________?

10.The factory will bring more jobs to local people,_________?