单项选择题

Nobody knew what this guy（）all these years.

A．had been doing
B．have being doing
C．was doing
D．has been doing

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单项选择题
Most of them lost their patience（）the meeting was long and boring.

A．even though
B．so that
C．in that
D．because of
单项选择题
Three new buildings（）on the campus by the end of this year.

A．will be built
B．are going to be built
C．will have been built
D．have been built
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