单项选择题

It has been rather costly to install the machinery, but it will prove to be worth the money ______

A．in conclusion
B．in the long run
C．in case
D．at the end
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单项选择题
The fellow is very ______ . He never asks others for advice.
A．conceited
B．proud
C．thoughtful
D．selfish
单项选择题
______ being late made the boss angry.
A．Him
B．His
C．He's
D．For him
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