—Excuseme.I'mlookingforBetheBestofYourself.—Sorry.Thebo...

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—Excuse me. I'm looking for Be the Best of Yourself.

—Sorry. The book you ask for______ out.

A. is selling B. is sold C. was selling D. will be sold

【解析】考查动词的语态。主语the book和动词sell构成被动关系，又时态为一般现在时，因此用一般现在时的被动语态。答语句意“对不起，你要的书已售完”。故选B。