I
1 A
2 D
3 D
4 A
5 D
6 A
7 D
9 A
10 B
11 A
12 D
II
1 does your mother work
2 was eating
3 Did Helen drive - did
4 does - come
5 bought
6 doesn't - water
7 went
8 Did they swim - didn't
9 makes
10 Do children play
11 saw
12 does
13 eat
14 volunteered
IV
1 and
2 and
3 so
4 and
5 and
6 so
7 and
8 but
9 but
10 so