题目内容
The manager _______ the danger of the gas explosion before the mine accident.
A. should become aware of B. should have become aware of
C. should be aware of D. could be aware of
B
解析:
略
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题目内容
The manager _______ the danger of the gas explosion before the mine accident.
A. should become aware of B. should have become aware of
C. should be aware of D. could be aware of
B
略