Bài 2.

1. 

(-) They didn't watch a good football match on TV last night.

(?) Did they watch a good football match on TV last night?

2. 

(-) Peter didn't send that letter to Mary yesterday morning.

(?) Did Peter send that letter to Mary yesterday morning?

3. 

(-) Jane's mother didn't buy a new car last month.

(?) Did Jane's mother buy a new car last month?

4. 

(-) We didn't visit Halong Bay three years ago.

(?) Did you visit Halong Bay three years ago?

5. 

(-) They didn't leave for Hai Phong in 1999.

(?) Did they leave for Hai Phong in 1999?

6.

They didn't build a new school in my village ten months ago. 

Did they build a new school in your village ten months ago?

7. 

I didn't borrow a lot of books in the library last weekend.

Did you borrow a lot of books in the library last weekend?

8. 

We didn't buy a house near Thao's house in 2009.

Did you buy a house near Thao's house in 2009?

Bài 3:

1. built

2. didn't do

3. gave

4. was playing

5. was doing - were playing

6. painted

7. were having - started

8. told - sat

9. got - were getting

10. rained - were walking

Bài 4:

1. They decided to get married last Sunday.

2. We were learning Maths at this time last Friday.

3. I didn't write or call my roommates three months ago.

4. Her children were playing chess in the sitting room at three p.m. yesterday.

5. Marria didn't finish her composition last weekend.