问题描述：
it is difficult to learn english well,isn't it?yes.( )more practice in listening and reading
and you will find it easier to learn.A.Do B.To do C.Doing D.Done
为什么选A不能选B呢,
and you will find it easier to learn.A.Do B.To do C.Doing D.Done
为什么选A不能选B呢,
问题解答：
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