—Robertisindeedawiseman.—Oh,ye

—Robert is indeed a wise man.
—Oh, yes. How I regretted ________ his advice.

A．to take	B．taking
C．not to take	D．not taking

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B．are not decided

C．has not decided

D．have not decided

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A．The walk

B．Walking

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A．Given

B．o give

C．Giving

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A．fuels	B．articles
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A．exchange	B．bargain
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