A．New machinery were introduced in the factory.
B．Poultry are very expensive in the city.
C．The police are investigating the murder case.
D．The militia were called out to rescue flood victims.
参考答案A
解析:
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A．concerning
B．for
C．as to
D．because of
A．meal
B．banquet
C．refreshment
D．snack
A．caught on
B．caught in
C．caught out
D．caught up