You'd better ________ that policeman.

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You'd better ________ that policeman.

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You'd better ________ that policeman.　　　

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A．ask　　　B．to ask　　　C．asking　　　D．asked

—Excuse me, How can I get to the hospital, please?

--You’d better__ that policeman. He may___.

 A. ask, know  B. asking, knowing  C.to ask, know D.To ask, knows