—Does she ______ a knife? —No, she _________. 
#60349
A
has; don’t
B
have; does
C
have; doesn’t
D
have; has
推荐题目
I suppose he ought to have known that,________?
#65462
A
don’t I
B
oughtn’t he
C
do I
D
ought he
Will you please     computer games now? 
#60270
A
not play
B
not to play
C
don’t play
D
not playing
He has to finish the experiment today. He must be in the lab, ______?
#64772
A
mustn’t he
B
won’t he
C
doesn’t he
D
isn’t he
There must have been a large number of tourists in Sanya during the past Spring Festival, __________?
#64917
A
mustn’t there
B
haven’t there
C
wasn’t there
D
didn’t there
---____ do you exercise, Miss Lin? ---Once a week. 
#60244
A
How long
B
How often
C
How far
D
How soon