I/ 1.C
2. A
3. D
4. B
5. A
6. C
7. B
8. D
II/ 1. buying=>> to buy
2. for=>> of (mk ko chắc)
3. doesn't=>> didn't
4. not talking=>> not to talk
III/1. goes
2. will visit
3. Did; buy
4. made
VII/ 1. She did not go to school yesterday.
2. How much is the blue dress?- It is 200.000 dong.
3. She wrote a letter to her mother last month.
4. he was at home to help her mother yesterday.