. ----______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
We're tired because we have ________ yin.
#35843
A
too many
B
too much
C
many too
D
much too
–Do you know this boy?He works really___.–Yes, I can ___ see him play. He always studies. 
#35535
A
hardly; hardly
B
hard; hardly
C
hard; hard
D
hardly; hard
The room was very dark, so I couldn’t see anything ______
#35109
A
enough clearly
B
enough clear
C
clearly enough
D
clear enough