Why he killed himself seems a secret, _______?
A.does it
B.doesn’t it
C.didn’t he
D.did he

What beautiful flowers are, _______?
A.isn’t it
B.is it
C.aren’t they
D.are they

Nobody knows the truth, ______?
A.don’t they
B.do they
C.does it
D.doesn’t it

Don’t leave here, ______?
A.shall we
B.won’t you
C.will you
D.do you

I’d better tell him the truth, ______?
A.hadn’t I
B.shouldn’t I
C.aren’t I
D.do I

No one is better cook than his mother, ______?
A.is she
B.are they
C.isn’t she
D.aren’t they

I think he will join us, ______?
A.doesn’t he
B.don’t I
C.won’t he
D.will he

Let me help you wash the dishes, ______ ?
A.may I
B.shall me
C.don’t I
D.will you

Somebody died in the accident, _______ ?
A.did he
B.didn’t he
C.didn’t they
D.did they

He never comes to class late, _______ ?
A.doesn’t he
B.never he
C.did he
D.does he