1.A                                    

2.A                                                                                                                   
3.C

4.A

5.B

6.B

7.C

8.A

9.A

10.C

11.B

12.B

13.C

14.B

15.D

16.C

17.A

18.A

19.C

20.A

21.B

22.D

23.A

24.C

25.A

Part 2

1.C

2.A

3.B

4.A

5.C

6.

7.A

8.

9.B

10.C

Part 3

1.from

2.blood

3.take

4.but

5.

6.few

7.for

8.main

9.other

10.replace

IV. Writing

Part 1

1.playing tennis when somebody stole my bag.

2.have been made by the scientists to find a cure for this disease.

3.poor health cannot prevent him from enjoying life.

4.though Mary was, she agreed to join the activity

1.had any contact with Paul for months

2.took it for granted that 

3.approve of us leaving 

4.was a hard choice

5. was put off