填空题

The missile was about (launch) ______ when an error was found with its control system.

【参考答案】

to launch

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热门试题

单项选择题

A．He seldom wakes up early.
B．He likes coffee just as the woman does.
C．He needs tea to make himself awake.
D．He doesn’t usually eat breakfast.

填空题

Candidates (require) ______ to present themselves fifteen minutes before the examination begins.