问题
选择题
—_______do you visit your grandparents?
—Almost once a month.[ ]
A. When
B. How soon
C. How often
D. How long
答案
答案：C
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—_______do you visit your grandparents?
—Almost once a month.[ ]
A. When
B. How soon
C. How often
D. How long
答案：C