выполните задание, пожалуйста

Ответ:

1 begins

2 is teacher doing ,is explaining

3 isn't working today

4 want

5 go

6 are you doing , I'm waiting

7 Do you understand it now?

8 What are writing ? , I'm writing

9 is knocking

10 Is Petrov here now?, is, is having

11 I'm, are waiting

12 Where is he now? think, is

13 I am thinking

15 is standing, looks, doesn't know

16 goes