问题
______ does he exercise? —Once a week.[ ]
A: How long
B: How often
C: How far
D: How old
B: How often
C: How far
D: How old
正确答案是：
同类题型
My grandmother found watching TV _________ but I enjoyed it very much..
Where is Mr Brown, do you know?― Oh, sorry. He is out. He ___________ back in an hour.
Sally prefers drawing playing the piano.[ ]
Who can help me _____ my lesson? [ ]
Simply ring me up, I’ll come to your help as soon as possible.