问题描述:
1.I------think he ------a student 2.Do you often write-----your pen pals
A.not,is B.not,isn't C.don't,is D./,isn't A.with B.for c.to d.from
A.not,is B.not,isn't C.don't,is D./,isn't A.with B.for c.to d.from
问题解答:
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