单项选择题

The sentence is hard to understand _________ there are no new words in it.

A．but
B．because
C．though
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单项选择题
No hurry. Please _________.
A．take ten minutes
B．take your time
C．take your times
单项选择题
There are about _________ English teachers in our city.
A．two hundred
B．two hundreds
C．two hundred of
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