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
It was not until the accident happened（）

A．that I realized my carelessness
B．when I realized my carelessness
C．as I realized my carelessness
D．when my carelessness has been realized
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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