Ответ:

2) He is waiting

3) They are playing

4) He is lying

5) They are having

6) She is sitting

3.2

2) He is cooking

3) You are standing

4) Somebody are swimming

5) We are staying

6) She is having

7) They are building

8) I am going

3.3

3) She is sitting on the floor

4) She isn't reading a book

5) She isn't playing the piano

6) She is laughing

7) She is wearing a hat

8) She isn't writing a letter

3.4

1) I am sitting on the chair/I am not sitting on the chair

2) I am eating/I am not eating

3) It is raining/It isn't raining

4) I am learning English/ I am not learning English

5) I am listening to music/I am not listening to music

6) The sun is shining/The sun isn't shining

7) I am wearing a shoes/I am not wearing a shoes

8) I am reading a newspaper/ I am not reading a newspaper