单项选择题

That was so serious a matter that I had no choice but ______ the police.

A．called in
B．calling in
C．call in
D．to call m
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单项选择题
She was so ______ in her job that she didn' t hear anybody knocking at the door.
A．attracted
B．absorbed
C．drawn
D．concentrated
单项选择题
It is politely requested by the hotel management that radios ______ after 11 o' clock at night.
A．were not played
B．not to play
C．not be played
D．did not play
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