2b asking

3a say

4c to

5c wait

IV.1 played

2 sent

3 taught

4 wore

5 wrote

V.1 what time do you go to bed last night?

2 why did she buy that dictionary?

3 who did you send these letters to?

4 when did lan go to nha trang?

5 how did she go to nha trang?

VI.1 They stopped at my restaurant for a short time.

2. My mother bought the material and made a dress for me.

3 they rented an apartment next door to mine

4 this is the first time she saw a shark

5 I often wrote letters to my pen pal last year

VII.1 did you spend

2 went

3 did you see

4 saw

5 did you buy

6 bought

7 got 

8 enjoyed

VIII.1 was

2 get up

3 were

4 have

5 go

6 mine

7 was

8 did

9 by

10 to use