问题描述：
he did his homework carefully for fear that he
He did his homework carefully for fear that he ( ).
A.made a mistake B.makes a mistake C.would make a mistake D.make a mistake
为什么选B 不选C?
He did his homework carefully for fear that he ( ).
A.made a mistake B.makes a mistake C.would make a mistake D.make a mistake
为什么选B 不选C?
问题解答：
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