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 in
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单项选择题
My mobile phone isn’t working. It_______.
A．needs being repaired
B．needs repairing
C．needs to repair
D．needs repaired
单项选择题
Having a good command of English is _______ an easy thing.
A．by all means
B．by any means
C．by every means
D．by no means
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