Ответ:

2doesn't study, won't write

3 isn't, won't have

4 isn't snow, won't ski

5 don't hurry, won't catch

6 don't go, won't have

7 doesn't get, won't have

8 I'm not, won't let

9 isn't, won't go

Ex 8.2.4

2 will return, finish

3 will buy, have

4 will stay , isn't