—Whatdoyouthinkofthepresenteconomicsituation?—Whenbigf...
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問題詳情:
— 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
知識點:情態動詞
題型:選擇題
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