赞题库-背景图
单项选择题

When I got to the airport, the plane______.

A．already took off
B．had already taken off
C．has already taken off
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热门试题

单项选择题That big room ______for meeting.

A．uses
B．is using
C．can be used

单项选择题Neither Peter______ Jack works in this factory.

A．or
B．nor
C．either