To have a dinner at a restaurant on the Eve of the Spring Festival, you need to reserve the restaurant months before, _____?
#64850
A
mustn’t you
B
didn’t you
C
don’t you
D
needn’t you
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There is nothing wrong with my bike,      ?
#65259
A
is it
B
isn’t there
C
isn’t it
D
is there
-___________ do you go to Old People’s Home?-Twice a month. 
#59921
A
How long
B
How soon
C
How often
D
How many times