题目内容：

____do you do morning exercise Every morning.A
____do you do morning exercise
Every morning.
A.how many B.how often C.how much.D.how many times

优质解答

B

追答：

how often问的是频率

追问：

B跟D有什么不一样呢？

追答：

how many times问的是次数，而B问的是多久一次，表频率。