单项选择题

The fishing boat that has been tied up at the pier for three days ______ finally on its way this morning.

A．was
B．were
C．is
D．are
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单项选择题
The police have caught the suspected thief and he's ______ arrest.
A．in
B．into
C．under
D．with
单项选择题
Because Max had lung cancer, he stopped ______ .
A．to smoke
B．smoke
C．smoked
D．smoking
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