1)have stopped
2)is looking,hasn't found
3)is
4)are you studying
5 has given
6 is knitting
7 have , are not
8 are planting
9 have gone
10 have found. is giving
11 have been
12 have seen
13 are you looking
14 is looking
15 is going
16 has left
17 have paid
18 have known
19 is making
20 is doing.have taken
21 im having