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—Ontheradio,billboards,TVandsoon,thereareavarietyofads,arebadones.Youshouldbecareful.—Thankyou,Iwill.A.someofthemB.fewofthoseC.someofthatD.someofwh

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—On the radio,billboards,TV and so on,there are a variety of ads,_______are bad ones.You should be careful.

—Thank you,I will.

A.some of them         B.few of those    

C.some of that         D.some of which

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D