20. Some long-haul drivers skip sleep and try to stay awake by drinking a lot of coffee，_______.
(A) a substance reduces their awareness
(B) their awareness might be reduced by this substance
(C) which substance may reduce their awareness
(D) a substance that may reduce their awareness
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這裡是名詞＋修飾語的結構。前面的名詞th...
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Some long-haul drive...
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(文法題)❲十秒解題❳Some long...
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