—___ __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
It is now 11:30 pm, so there are few people and buses on the street, ____________ ?
#69740
A
aren’t there
B
are they
C
aren’t they
D
are there
Teachers will hardly use chalk in the future, ______?     
#68855
A
will he
B
won’t he
C
will they
D
won’t they
–Your mother’s never seen a 3D film at the cinema, has she?--____, but only once.
#68788
A
Yes, she has
B
No, she hasn’t
C
Yes, she is
D
No, she isn’t