—Could you join us this afternoon?—Sorry, I_______. I take care of my little sister because my mother is out.

题型：单选题题类：常考题难易度：普通

江苏省大丰市实验初级中学2015-2016学年七年级下册英语期末考试试卷

—Could you join us this afternoon?

—Sorry, I_______. I take care of my little sister because my mother is out.

A、can't; may B、couldn't; have to C、can't; have to D、couldn't; may

举一反三

— That's true. Let's send him to the hospital as soon as possible.

—I agree. I think it's very important.

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