I.
1. Before they went home, they had eaten a big roasted chicken.
2. In spite of having a very important job, he isn't particularly well - paid
3. If he doesn't take these pills, he won't be better.
4. I will be met at the airport by John tomorrow.
II.
1. I haven't travelled to Hong Kong for two years.
2. If I had more money, I would be having a vacation in Hawaii.
3. I used credit card to buy a computer game which is called 'Mar Mystique Mission'.
4. More trees will be planted in our school yard next week.
III.
1. had flown
2. haven't seen
3. will be free
4. were
- $Answered_{}$ $by_{}$ $thieukhue_{}$ -