Ответ:
Ex1

1)aren’t sitting

2)am having

3)is the dog swimming

4)are enjoying

5)isn’t writing

Ex2

1)is

2)plays

3)is working

4)travels

5)is making

6)likes

7)lives

8)wants

9)is studying

10)phones

Ex3

1)happier

2)most expensive

3)best

4)bigger

5)more thin

6)funniest

7)better

8)worser

9)most popular

10)more casual

Ex4

1)no one

2)someone

3)everywhere

4)anywhere

5)someone

Ex5

1)there

2)it

3)it

4)it

5)there

Ex7

1)sea

2)their

3)hour

4)hear

5)write

6)by

7)meat

8)too

9)buy

10)son

Объяснение: