I.
1. A 2. B 3. C 4. A 5. C
II.
1. bought
2. has had
3. arrived - took - went
4. were
5. When did you start ………………………………………?
III.
1. The dictionary isn't used very often.
2. I wish I remembered Hoa’s phone number.
3. We have not seen Tom for two hours.
4. She wishes she didn't have to do a lot of homework today.
5. I was sick, so I did not go to school yesterday.