单选题：Atfirst,textingwasusedbytheserviceproviderstosendadvertising

题目内容：

Atfirst,textingwasusedbytheserviceproviderstosendadvertisinge-mailstotheircustomers.

参考答案：

答案解析：

Westillbadlywanttobetouchedtodayeventhoughweshedourfur.

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Weshouldinstructyoungpeopletodosomedeepreadinginsteadoflettingthemindulgeinthei

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Ideally,takingdownallyourworriesinthedaytimesystematicallycaneaseyouranxietyatn

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Itwillbeharderforustoturnoffe-mailandgetawayfromsocialmediaaswebecomemoreconnec

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Theclassinstructorswanttoteachstudentsthatcouplesshoulddealwithconflictstogethe

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