I.1 aren't you

2 could she

3 must we

4 isn't it

5 didn't he

6 does he

7 shall we

8 isn't she

9 will they

10 haven't you

11 will you

12 aren't there

13 aren't I

14 does he

15 do they

II.a will-> would

b don't-> not to,shu->shut

c amn't-> aren't

d taht-> it

e do Lan and hoa-> don't they

f the next day-> the day before

g do they-> isn't it

h said to-> told

i ake->take

j now->then

III.a the browns will go on holiday next month,won't they?

b the tourist asked me how he could go to the police station

c the children were doing their homework when their mother got home,weren't they?

d his father said he would go fishing the following week

e we are having an interactive TV,aren't we?

f she asked me how many hours I spent watching TV every day

IV.1 hoa's teacher asked hoa where she lived

2 the custom officer told me to open my bag

3 he asked me how many people there were in my family

4 I wish I could go there with you

5 he used to play piano at night

6 this house was built last month

7 we wish she went to china with us

8 Your parents still live in Nha Trang , don't they?