Ответ:
1) snows
2)is snowing
3)cooks
4)is cooking
5)leaves
6)is leaving
7)watch
8)are sitting, watch
9)does
10)is doing
11)rains
12)is raining
13)has
14)is having
1.can
2.should
3.shouldn't
4.can
5.mustn't
6.can
7.could