单项选择题

I think if is high time we ______ the fact that environmental pollution in this area is getting more serious than before.

A．woke up to
B．must wake up to
C．wake up to
D．are waking up to
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单项选择题
Some people apparently have an almost incredible ability to ______ the right answer.
A．bump into
B．come up with
C．bring up
D．bear out
单项选择题
Jack admitted that he ought not to have made his mother angry, ______
A．oughtn't he
B．wasn't he
C．didn't he
D．hadn't he
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