III

1. They were playing tennis at 10.30 yesterday morning.

2. Ann was doing her homework at 5o'clock this afternoon.

3. My father was washing his car from five to six.

4. This time last year we were living in France.

5. The students were offering the flowers to the visitors.

6. I was cooking dinner half an hour ago.

7. She was working in the studio at that time.

8. What were you doing from 3 to 6 yesterday afternoon.

IV:

1. rang/was watching

2.were you driving/happened

3. were making/arrived

4.went out/were having/came

5.were you doing/was working

6.began/was sitting

7.took/wasn't looking

8.saw/were trying

9.was walking/felt/ didn't know

10.dropped/was doing/didn't break

V:

(1) were driving

(2) saw

(3) were coming

(4) appeared

(5) stopped

(6) got

(7) was 

(8) were twinkling

(9) seemed

(10) had

(11) was flashing

(12) were watching

(13) flew

(14) disappeared

VI:

1.are always watching television

2.am always making the same mistake

3.are always losing your key

4.is always breaking down

5.is always leaving the lights on

6.are always missing the school bus 

7. are always losing your pen

8.are always forgetting your glasses