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4. It was not until midnight that I finished my homework.
5. It was not until the teacher came that the boys returned class.
6. It was not until her birthday that the girl answred the boy.
7. It was not until the army were almost defeated that the supplies reached the front.
8. It was not until Mary was 20 that she lived alone.
9. It was not until I was 18 that I used a cell phone.
10. It was not until last month that she accepted his love.

IV/
1. would write
2. were
3. painted
4. would come
5. would buy
6. would have
7. had
8. spoke
9. would give
10. would wear

2/
1. boirng
2. interested
3. relaxing
4. disappointing
5. depressed
6. exciting
7. exhaustd
8. embarrased
9. touched
10. tiring