—___ __must I take this medicine every day? —Three times a day.
#70492
A
How long
B
How often
C
How far
D
How
推荐题目
She  doesn't  like pop music,___________?
#69524
A
doesn't she ?
B
does she
C
does he
D
do you
—You haven’t been to the USA, have you?—      But how I wish to go there again!
#69633
A
Yes, I have.
B
No, I have.
C
No, I haven’t.
D
Yes, I haven’t.
---Is your father a teacher? ---well, he _______.
#70684
A
used to
B
was used to
C
used to be
D
is used to be