1-b
2-a
3-b
4-a
5-c
6-a
7-c
8-b
9-b
10-a
11- b
12- c
13- b
14 - a
1. has to
2. couldn't
3. shall
4. didn't need to
5. can
6. should
7. was able to
8. ought to
1. Jill was sent flowers by somebody.
Flowers were sent to Jill by somebody.
2. They were left outside her house by someone.
3. He was seen by one of her neighbours.
4. The card hadn't been signed by him.