中文谷---Youshouldbecarefulwhen
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問題詳情：
--- You should be careful when ________.
--- Yes, I will. I’d like to know when ________ to have a rest.
A. driving; stopping B. driving; to stop
C. to drive; stopping D. to drive; to stop
【回答】
B
知識點：相似 相近詞比較
題型：選擇題
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