【題目】The project they're working on many teenage problems that they care about.

A. covering B. covers

C. include D. Including

【答案】B

【解析】

試題分析：句意：他們正在工作的項目涵蓋了許多青少年關(guān)心的問題。根據(jù)主語是第三人稱單數(shù)The project故謂語動詞用第三人稱單數(shù)。結(jié)合句意，故選B

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