单项选择题

I was giving a talk to a large group of people, the same talk I ______ to half a dozen other groups.

A．was giving
B．am giving
C．had given
D．have given

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单项选择题

I was just talking to Margaret when Jackson ______.

A．cut in
B．cut down
C．cut out
D．cut up

单项选择题

Road conditions in this area had gone from bad to worse. Accidents had taken place ______ before the strict measures were taken.

A．by the way
B．in a row
C．in the way
D．in a line

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