问题
选择题
---- _______ do you write to your mother?
----Once a month
.[ ]
A. How long
B. How often
C. How far
D. How much
答案
答案：B
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---- _______ do you write to your mother?
----Once a month.[ ]
A. How long
B. How often
C. How far
D. How much
答案：B