I.1 to see
2 to arrive
3 to go
4 taking
5 doing
6 helping
7 playing
8 speaking
9 borrowing
10 to play
11 to persuade
12 talking
13 to come
14 to post
15 to post
16 working
17 to go
18 making
19 drinking
20 not to make
II.1 children enjoy helping with household tasks
2 you don't forget to post the letter to me
11.b when
II.1 who worries about his bad marks?
2 how often does he take a holiday?
3 what is james doing in the school ground?
4 how long had the cooks lived in new york before moving here?
5 when did we first meet?
III.1 what time does she get up?
2 what does she have for breakfast?
3 how does she go to work?
4 what does she do in the evening?
5 what time does she go to bed?