单项选择题

The 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
The manager promised to keep me（）of how our business was going on.

A．to be informed
B．on informed
C．informed
D．informing
单项选择题
（）to be the symbol of the city, the sculpture has been well preserved.

A．Considering
B．Being considered
C．To consider
D．Considered
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