21. To many teenagers the cellphone is not only _____useful tool but also ____ way to have fun and be cool.
A.the…the | B.an…the | C.a…a | D.a… 不填 |
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21. To many teenagers the cellphone is not only _____useful tool but also ____ way to have fun and be cool.
A.the…the | B.an…the | C.a…a | D.a… 不填 |
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