单项选择题

Your dog needs at least 20 minutes of vigorous exercise every day.

A．physical
B．energetic
C．regular
D．free
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I enjoyed the play -- it had a clever plot and very funny dialogues.
A．long
B．boring
C．original
D．humorous
单项选择题
The two banks have announced plans to merge next year.
A．combine
B．close
C．break
D．sell
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