填空题

The Chinese people are doing things no one (do)（）so far.

【参考答案】

has done

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填空题

There was nothing to prevent her from (do)（）so.

单项选择题

A．She’s lost her way in the city.
B．She doesn’t know the way to the place she wants to go to.
C．She can’t get to the fountain.
D．She is tired of walking.