Question

Answer 1

45 hearing - not to enter

46 to have - writing

47 to answer - replying

48 making - to do

49 to forget - worrying

50 remaining - to help - to stay

Ex2

1 collecting

2 to go

3 to answer

4 gambling

5 making

6 making

7 drinking

8 will hold

9 sleeping

10 hearing

11 putting

12 waiting

13 to work

14 not to speak

15 making

16 to know

17 to wait

18 to eat

19 overhearing

20 not to touch

21 to inform

Ex3

1 A

2 C

3 D

4 B

5 A

6 A

7 C

8 D