. ----______are they staying in Beijing?----For three days. 
#35605
A
How often
B
How long
C
How old
D
How soon
推荐题目
I’m sorry I’m late. I should get here 10 minutes ________.
#35432
A
early
B
earlier
C
the earlier
D
the earliest
I was so tired that I could ______walk any farther.
#35407
A
hardly
B
nearly
C
really
D
suddenly
There is ________ sheep eating grass there.
#35753
A
a little
B
little
C
a few
D
few