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---          a month do you do voluntary work ? ---Twice a month.
#59864
A
How long
B
How many times
C
How much
D
How often
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He must have been annoyed by something yesterday, _____?
#64519
A
wasn’t he
B
hasn’t he
C
needn’t he
D
mustn’t he
．I imagine she hardly ever writes to you,         .
#64964
A
don’t I
B
doesn’t she
C
does she
D
do I
Brian told you that there wasn’t anyone in the room at that time, ___________?
#65056
A
was there
B
wasn’t there
C
didn’t he
D
did he
---Is that Nick?---No, _________.
#60066
A
it isn’t
B
he isn’t
C
that isn’t
D
she isn’t
---“Didn’t the robot have a rest?”---“_______. Because it never gets tired.”
#59999
A
No, it did
B
Yes, it did
C
No, it didn’t
D
Yes, it didn’t