A
1 fly
2 is writing
3 sits, is sitting
4 don't wear
5 see, are working
6 doesn't listen, is listening
7 don't understand, are saying
8 believe
9 give
10 are you doing, am tasting
B
1 will hurt
2 is snowing
3 am looking
4 leave
5 will become
6 will cut
7 am wearing
8 is visiting, are having
9 takes
10 will be
C
1 took
2 arrived, was crying
3 fought
4 was writing, came
5 walked, picked, had
6 was driving, started