---______ have you been in class today? ---For two hours.
#59891
A
How often
B
How long
C
How many
D
How soon
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—What’s wrong with my computer, Jack?—Let me have a check. OK, it works now.—You mean, nothing wrong with it, ________ ?
#64467
A
is there
B
isn’t there
C
is it
D
isn’t it
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
According to what he complained about, something must have gone wrong with the computer, ______?
#64712
A
mustn’t it
B
didn’t he
C
hasn’t he
D
didn’t it
Mrs. Black doesn’t believe that her son is able to design a digital camera, ______?
#64799
A
is he
B
isn’t he
C
doesn’t she
D
does she