The last half of the nineteenth century______the steady improvement in the means of travel.

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问题 The last half of the nineteenth century______the steady improvement in the means of travel.

选项 A、has witnessed
B、was witnessed
C、witnessed
D、is witnessed

答案C

解析

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本试题收录于：英语题库普高专升本分类

英语

普高专升本

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The last half of the nineteenth century______the steady improvement in the means of travel.

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