—Whatdoyouthinkofthepresenteconomicsituation?—Whenbigf...
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问题详情:
— What do you think of the present economic situation?
— When big firms reduce their expenses, we ______ know that times are really hard.
A. shall B. could
C. must D. need
【回答】
A
知识点:情态动词
题型:选择题
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