单项选择题

They decided to take some actions ______ the situation turned too bad.

A．until
B．unless
C．when
D．before
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单项选择题
If you had told me in advance, I ______ them at the station.
A．would go to meet
B．have gone to meet
C．would have gone to meet
D．meet
单项选择题
Which do you think is ______ important, health or wealth.'
A．the more
B．more
C．most
D．the most
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