1) to let him\ go 2) make him practice 3) was made to repeat 4) it can be done\ to try 5) let me help 6) to read the letter\ and write 7) ought to take care 8) couldn't find it 9) was seen to leave 10) had to put 11) told me not to walk 12) him play the piano 13) had better go there 14) not to tell them 15) not to miss the train
2) make him practice
3) was made to repeat
4) it can be done\ to try
5) let me help
6) to read the letter\ and write
7) ought to take care
8) couldn't find it
9) was seen to leave
10) had to put
11) told me not to walk
12) him play the piano
13) had better go there
14) not to tell them
15) not to miss the train
2) _
3) to
4) _ , to
5) _
6) to, to
7) to
8) _
9) to
10) to
11) to
12) _
13) to
14) _
15) to