Tomanyteenagersthecellphoneisnoto

发布时间：2020-07-27 07:23:43

To many teenagers the cellphone is not only _______ useful tool but also _______ way to have fun and be cool．A.the; theB.an; theC.a; aD.a; 不填

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C解析useful以辅音音素开头。
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