题目内容
【题目】The bus dropped me off and pulled away _____I realized I had left my bag on it.
A. while B. before
C. after D. since
【答案】B
【解析】
考查连词辨析。句意:在我意识到我包落在车上前,这辆公共汽车已经开走了。文中表示“在我意识到以前”,A. while虽然;B. before在…之前;C. after在…之后;D. since自从,故选B。
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