Which of the followings does Tom not advocate on how to serve messages directly to customers? A.make phone calls B.send offers to friends C.use ads to download mobile coupons D.save locations to clients
正确答案：D
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Which of the followings does Tom not advocate on how to serve messages directly to customers? A.make phone calls B.send offers to friends C.use ads to download mobile coupons D.save locations to clients
正确答案：D
