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
—It's Ann's.
— Of course not. He is good at singing ____ he works hard.
—Sorry, I will be careful next time.
—I think it is _______ you are doing too much.
—________ he has gone to Beijing to have a meeting.
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