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The last half of the nineteenth century the steady improvement in the means of t

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The last half of the nineteenth century the steady improvement in the means of t

The lasthalf of the nineteenth century ________ the steady improvement in the means oftravel.

A. has witnessed　 B. was witnessed

C. witnessed　D. is witnessed

 

试题答案

答案：C

提示：

witness表示“目睹”，只能用主动语态。句中19世纪后半叶是一个具体的表示过去的时间，所以用一般过去时。

 

标签：nineteenththesteadycenturylast

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