I.
1. b
2. a
3. c
4. a
II.
1. watching
2. go
3. in
4. can
5. bought
6. to give
7. water
8. well
III.
1. drank
2. visiting
3. do
4. to invite
IV.
1. He used to sell to buy food and clothes for his family.
2. He discovered one of his chicken laid a gold egg.
3. His wife wanted more gold eggs.
4. Yes, they were.
V.
1. My friend said to me that I should go to the dentist.
2. I enjoy learning English.
3. The teacher told me to give Tim that dictionary.
4. Nam used to drink coffee in the morning last year.
VI.
1. Mr Hoang likes watching TV.
2. Mr Lan told me to buy some English books at the bookstore yesterday.
