[ ]
A. How long
B. How
C. How soon
D. How often
B. How
C. How soon
D. How often
— _ __ is from Kaifeng to Zhengzhou?
—about 70 KM.
—about 70 KM.
[ ]
A. How long
B. how far
C. How soon
D. How often
B. how far
C. How soon
D. How often