Ответ:

3 exer

Объяснение:

2 haven't eaten

3 have bought

4 haven't brushed

5 has sent

6 haven't seen

7 has been

8 has visited

9 have done

10 haven't had

10exer

2 a

3 c

4 a

5 c

6 b

7 c

8 a

9 b

10 b