1c
2b
3b
4d
5b
6a
7c

1c   2c   3b    4a   5c    6d   7a   8a   9a  10c  11a  12c   13d   14d   15c   16c   17b   18c   19d    20a

1. C. went
2. C because
3.B. from
4.A haven't heard
5.B playing
6.D. doing
7.A going
8.C. for
9.B. That's all right
10.B addictive
11.A. a volunteer
12.C. noisier
13.D. cheaper than
14.B. badder than
15.C. better
16.C more carefully than
17.C. give
18.B. hay
19.B. to live
20.A. doing DIY