单项选择题

The first two stages in the development of civilized man were probably the invention of weapons and the discovery of fire, although nobody knows exactly when he acquired the use of the ______.

A．latter
B．latest
C．later
D．last
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单项选择题
It is said that John will go to an appointment tomorrow. If he were to come tomorrow, I ______ ask him to go to your place.
A．will
B．would
C．shall
D．might
单项选择题
The current general slackness of the market has prevented us from ______ new orders with you.
A．placing
B．putting
C．arranging
D．providing
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