1 woke

2 wrote

3 studied

4 were you doing - was preparing

5 Was it still raining

6 was staying - were repairing

7 were playing

9 Did you know

10 was looking - came -snatched 

11 was typing - was talking

12 fell-was getting

13 didn't believe - loved

14 didn't leave - was

15 Did they arrive

16 was sitting - reading 

1 had harvested 

2 had sold

3 had already left

4 had been

5 phoned

6 had they visited

7 hadn't finished

8 had been

9 had seen - came

10 lived

11 had admitted

12 did you write 

1 are going to have

2 will be sitting

3 will see

4 will be working

5 will still be packing

6 will be

7 will go

8 will it be

9 are going to

10 won't end

11 are going to dig

12 will be lying

13 is going to be

14 will open - finish

15 will get 

1 will fall

2 will have fallen

3 will have lived

4 will take

5 won't be

6 will have been rebuilt

7 will get

8 will have recovered 

9 will have forgot

10 will be 

1 What the teacher explained to me yesterday made me understand

- He wants to know how she could do this exercise

2 The teacher who made the difference is Mr.Dan

The man to whom I spoke is the president 

Ex17

1 should

2 May

3 should

4 could

5 Can

6 should

7 can

8 could

9 needn't

10 could

11 needn't

12 mustn't

13 must - would

14 could

15 can - neend't

16 Could - can't

17 need

18 might

19 shouldn't - might

20 mustn't

21 must

22 May

23 neendn't

24 Can - can't

1 was reading - came - asked - am preparing - said - didn't know

2 have been - was - keeps

3 have been waiting - got - called - stayed - will come - leaves

4 would be - asked - would bring - wanted 

5 got - learnt - had left - told - had been

6 will leave - are you sitting - had - Have you packed - have ordered

7 has taught - came - had lived - lives - comes  

1 are 

2 paid

3 was - hasn't had

4 has been

5 bought - was

6 have already run 

7 was waiting - stopped

8 reached 

9 will phone - will be eating

10 began - is still going

11 haven't finished

12 am driving

13 will have come - gone

14 haven't seen - believe - is writing

15 will meet - have finished

16 will have been waiting

18 went - were playing -said - have been playing

19 is - are - is

20 rains - is raining

8 D

9 A