精英家教網 > 高中英語 > 題目詳情
______the road ,don’t forget to look both ways.
A．As crossingB．While you cross
C．While crossingD．Cross
C

這題考查時間狀語從句的省略式，當主從句的主語一樣時，可以省略從句的主語和be動詞，這題的while crossing就省略了you are，句意是：當你過馬路時，別忘了兩邊看看。選C。
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