填空题

A full-scale security operation __________ (现在正在实施之中).

【参考答案】

is now under way
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单项选择题
A．Three years ago.B．This year.C．Last year.D．In December.
A．Three years ago.
B．This year.
C．Last year.
D．In December.
填空题
__________ (突然遇上一场倾盆大雨) he was wet through.
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