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
<上一题 目录 下一题>
热门 试题

单项选择题
The government ______ regulations that put this old city under protection.
A．published
B．issued
C．discharged
D．released
单项选择题
Since the matter was extremely ______, we dealt with it immediately.
A．tough
B．tense
C．urgent
D．instant
相关试题