单项选择题

The energy gained-from the sun can then be used during the night to enable the necessary chemical reactions to ______ in his body.

A．precede
B．proceed
C．progress
D．practice
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单项选择题
It is absurd that women ______ be paid less than men for doing the same work.
A．are to
B．ought
C．would
D．should
单项选择题
______ their terms, we would go bankrupt.
A．If we accept
B．If we should accept
C．If we had accepted
D．If we are to accept
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