bài 3.

1.by coach, by underground, by bus, by motorbike,....

2.last week, last weekend, last year, last month, ....

3. got, flew, swam, read,....

4.Nha Trang beach, Ha Long bay, Hoi An ancient town, Hue Imperial City,...

Bài 4.

1. go ⇒ went

2. live ⇒ lives

3. with ⇒ by

4. take ⇒ took

5.has ⇒ had

6.hometower ⇒ hometown

Ex.3

1.by coach, by underground, by bus , ..

2.last week, last weekend, last month, ..

3. got , read,.

4.Nha Trang beach, Ha Long bay, ..

Ex. 4 :

1, go = went

2, live = lives

3, with = by

4, take = took

5, has = had

6, hometower = hometown

[ Bài 5 mik ko rõ lắm ]