—      does your father wash his car?—Once a week.
#59928
A
How much
B
How often
C
How many
D
How long
推荐题目
It’s the third time that Li Ming has been to Xi’an , _______? 
#64474
A
isn’t he
B
hasn’t he
C
isn’t it
D
hasn’t it
The student must be working very hard, ________?
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A
doesn’t he
B
mustn’t he
C
needn’t he
D
isn’t he
 Are these apples? Yes, ____ 
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A
they are
B
they’re
C
they aren’t
D
they’re not
—_______will you come back home from vacation?—In two weeks.
#64747
A
How often
B
How soon
C
How much
D
How long