单项选择题

What is the news about()

A. Using computers.
B. Reclaiming energy.
C. Heating buildings.

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单项选择题

Realizing the great loss our company’s error caused you, and being aware that money can never really make up for it, we wish to offer you 2 million dollars in()anyway.

A. prize
B. compensation
C. reward
D. cash

单项选择题

This paper is not free ! I’d appreciate it if everyone would start trying to()it.

A. use
B. produce
C. move
D. conserve

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