Question

(2005·黄石市)

--- ________ do you go home to see your parents?

--- Once a week.

[　　]

A．When

B．How long

C．How soon

D．How often

Answer 1

答案：D
解析：

解析：从答案once a week可知，此题要用how often来提问，因为once a week (一星期一次) 表示频率。