单项选择题

--How often do you write to your uncle-- ______.

A． Once a month
B． In a month
C． For a month
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单项选择题
Jim works hard on his Chinese and ______.
A． so Lucy does
B． so is Lucy
C． so does Lucy
单项选择题
______ the story is short and there are no new words in it , it is difficult to understand.
A． But
B． Though
C． And
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