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-Hi, Susan, you look tired. -I for months for the coming celebration of our scho

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-Hi, Susan, you look tired. -I for months for the coming celebration of our scho

—Hi, Susan, you look tired.

—I       formonths for the coming celebration of our school’s 90th anniversary.

A.was preparing      B.have beenpreparing C.had prepared      D.prepare

 

试题答案

【答案】

B

【解析】

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