试题 试卷
题型：单选题 题类：常考题 难易度：普通
外研版初中英语九年级下册Module 4 Unit 1 You must becareful of falling stones.习题
— He ________. I've already borrowed one.
— I'm afraid you _________. It's a non-smoking area.
— No. You ______. You have to finish your homework first.
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