单项选择题

If law and outer ______ not maintained, neither the citizens nor their properties are safe.

A．were
B．are
C．is
D．was
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单项选择题
We were running out of money and things were looking ______.
A．grim
B．glossy
C．gorgeous
D．gracious
单项选择题
The skipper was not willing to risk ______ his ship through the straits until he could see where he was going.
A．taking
B．to take
C．having taken
D．being taken
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