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?