问题
_______ do you exercise, Sally? —Four times a week. [ ]
A: How much
B: How often
C: How long
D: How many
B: How often
C: How long
D: How many
正确答案是：
同类题型
Which module is the most difficult in this book?— I think _____ module.
It ________ about eight minutes for sunlight (阳光) to travel from the sun to the earth.
We’ll send our homework ____ our teachers ____ e-mail .[ ]
I’ll never forget the day_____ the great scientist came to our school and gave us a speech.