单项选择题

The house was very quiet, ______ as it was on the side of a mountain.

A．isolated
B．isolating
C．being isolated
D．having been isolated
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单项选择题
Our son doesn't know what to______ at the university; he can't make up his mind about his future.
A．take in
B．take up
C．take over
D．take after
单项选择题
I have heard both teachers and students ______ well of him.
A．to speak
B．spoken
C．to have spoken
D．speak
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