Ответ:

IV

1 - am thinking

2 - is thinking

3 - is looking, look

4 - is taste

V

1 - was walking, met

2 - got up

3 - were watching, knocked

4 - drove

5 - was washing up

VI

1 - will fly

2 - will be

3 - will be

4 - will arrive

5 - will visit