单项选择题

I think it 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
They tried to keep it quiet but eventually everyone learned about the ______ meeting.
A．intangible
B．sedate
C．impudent
D．clandestine
单项选择题
They tried to drive their horse into the river, but he simply could ______ not.
A．budge
B．surge
C．trudge
D．dredge
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