单项选择题

They U. S will never again have as a nation the spirit of adventure as it ______ before the West was settled.

A．could
B．was
C．would
D．did
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单项选择题
Thus ______ between England and France which was to last for 100 years.
A．broke out a war
B．did a war break out
C．a war broke out
D．was a war broken
单项选择题
The residents, ______ had been damaged by the flood, were given help by the government.
A．all their homes
B．all of which homes
C．all of whose homes
D．all of their homes
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