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题型：单选题 题类：常考题 难易度：容易
北师大版初中英语八年级上册Unit 6 Lesson 17同步练习3
—She_________works hard at it, you know.
一He needn't. I have borrowed one.
—I'm afraid not. He is ________ to be the host.
—Sorry to hear that. But our government _______ much about the school bus safety management.
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