Ex4

1 received

2 have lived

3 has worked

4 has done

5 did they put

6 is

7 am listening

8 watching - am listening

9 am reading - is watching

10 get up

Ex3

1 are you doing

2 is watering

3 are playing - is playing

4 is watching

5 usually go - have - am - always visit

6 starts - am starting

7 is burning

8 am working - am saving up

9 smokes - is trying

10 read - listen - watch

Ex2

1 live - am staying

2 am driving

3 are lying

4 doesn't understanding - are talking

5 weigh - looks

6 is coming - are meetng

7 is snowing - snows

8 swims - does not run

9 don't know

10 thinks - looks

Ex1

1 is listening

2 rains

3 works - is not working

4 is running - wants

5 speaks - comes

9 Even though he got good jobs, he wasn't satisfied

10 There was somuch food that everyone ate too much.

5 Anh went to school late though she got up early in the morning

6 Although Le tried to lift the desk, she was rather weak to do it

7 Son can solve the problem even though he was absent last time

8 He drove fast, so he caused an accident

1 It is such a warm day today that I could hardly work

2 I had so little knowledge of the subject that I got zero on the test

3 Tom has so much money that he doesn't know what to do with it

4 She has so many things to finish that she doesn't have time to rest