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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单项选择题

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

I want to provide my boys with a decent education．（）

A．good
B．special
C．private
D．general

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