问题

_______ do you exercise? —Three to six times a week. [ ]
A: When
B: How often
C: How long
D: How much
B: How often
C: How long
D: How much
正确答案是:
同类题型
I’d like to read the book over there. Could you pass _______, please?—Certainly. Here you are.
Thanks for____ me about your morning.
Johan didn’t review(复习)lesson, ________ he couldn’t answer the teacher’s question.[ ]
You can not imagine the difficulty they had ____ the problem. It isn’t ____ easy.