—__________ do you exercise? —I exercise
题型：选择题
问题：
—__________ do you exercise?
—I exercise three times a week. [ ]
A. How often
B. How many days
C. How usually
D. How much
—__________ do you exercise?
—I exercise three times a week. [ ]
A. How often
B. How many days
C. How usually
D. How much