单项选择题

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

A．has witnessed
B．was witnessed
C．witnessed
D．is witnessed
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单项选择题
______ that Susan hadn't dared to make a sound.
A．So was he absorbed
B．So absorbed he was
C．So absorbed was he
D．So he was absorbed
单项选择题
Many newcomers complain of the rapid ______ of life in Hong Kong.
A．rate
B．pace
C．speed
D．growth
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