$\text{Hoa never come to school late, doesn't she?}$

$\text{He hardly ever makes a mistake, doesn't he?}$

$\text{Nobody liked the play, did they?}$

$\text{She'd saved money when she bought it, didn't she?}$

$\text{They think he's funny, don't they?}$

$\text{He ought to make a note of it, oughtn't he ?}$

$\text{She must be here, mustn't she?}$

$\text{I remember you said she would come the next day, don't you?}$

$\text{I don't think he will come, won't he?}$

$\text{One can leave it, can't you?}$

$\text{What a beautiful house, isn't it?}$

$\text{What handsome boys, don't they? }$

$\text{How lovely the baby is, isn't it/ he/ she?}$

$\text{How interesting the games are, aren't they?}$

$\text{People think she tell lie, doesn't she?}$

$\text{It seems that you are right, doesn't it?}$

$\text{What you have said is wrong, isn't it?}$

$\text{Why he killed himself seems a secret, isn't it?}$

1) doesn't she

2) does he

3) did they

4) hasn't she

5) do they

6) ought he

7) mustn't she

8) didn't you

9) won't he

10) can't he

11) isn't it

12) aren't they

13)isn't he

14) aren't they

15) doesn't she

16) aren't you

17) isn't it

18) didn't he

19) don't I

20) can't he