“________ do you exercise?” “Three  times a week. ” 
#40818
A
How long
B
How often
C
How far
D
How many
推荐题目
________ climb the mountains(山).
#40972
A
Not
B
Don’t
C
Not do
D
Doesn’t
What about _____________at home?   
#41176
A
do some reading
B
to do some reading
C
doing some reading
D
doing any reading
—_____ and see a film this afternoon?—That’s a good idea.
#40893
A
Why don’t go
B
Why not go
C
Why not to go
D
Why doesn’t go