问题描述：
We should spend as much time as we can our spoken English.
We should spend as much time as we can( )our spoken English.
A.practice B.practicing C.to practice D.on practice
为什么答案选B呢?不应该选C吗?
We should spend as much time as we can( )our spoken English.
A.practice B.practicing C.to practice D.on practice
为什么答案选B呢?不应该选C吗?
问题解答：
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