Відповідь:

a)

2. were doing, was walking
3. was meeting
4. were running

5. was waiting

b)

1. saw

2. was driving, ran

3. broke, was cleaning

4. looked, saw, was going

5. opened, found

6. came, was washing up, was playing

Пояснення:

Відповідь:

2) were doing, was walking
3) was meeting
4) were runing
5) was waiting

1) saw
2) was driving, was runing
3) broke, was cleaning
4) was looking, saw, was going
5) opened, found
6) came, was washing up, was playing