Вправа 1

Working, Swimming, Coming, playing, lying, telling, getting, taking, cutting, drinking, making, serving, eating, sitting, crying, skiing, traveling, smiling, begining, preparing, stopping, listening, shaving

Вправа 2

1.are

2.is

3.are

4.is

5.are

6.am

7.are

8.is

9.are

Вправа 3

Yes, he is

No, the aren't

Yes, I am

No, he isn't

Yes, they are

No, it isn't

No, I not

Yes, it is