1, is - is

2, are - aren't

3, is - is

4, are - are

5, am not - am

6, aren't - are

7, are- am

8, like - don't like

9, likes - don't like

10, is - likes - plays - goes

11, do you do - watch - play

12, does Susan do - reads - watch

13, don't study - studies

14, don't eat - have

15, are - walk - go

16, don't walk - goes

17,  are.. going - are going

18, are cooking

19, am reading - is studying - are drawing

20, are skipping

21 , Is Lan watching - isn't watching - is playing

1, is - is

2, are - are not

3, is - is

4, are - are

5, am not - am

6, are not - are

7, are- am

8, like - do not like

9, likes - do not like

10, is - likes - plays - goes

11, do you do - watch - play

12, does Susan do - reads - watch

13, do not study - studies

14, do not eat - have

15, are - walk - go

16, do not walk - goes

17,  are.. going - are going

18, are cooking

19, am reading - is studying - are drawing

20, are skipping

21 , Is Lan watching - is not watching - is playing