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碎片内容
高一 Unit3 同步知识语法梳理（基础版）引入：1. It rained heavily in the south，________ serious flooding in several provinces. A. caused B. having caused C. causing D. to cause 2. ________ at my classmates' faces, I read the same excitement in their eyes. A. Looking B. Look C. To look D. Looked3. Lots of rescue workers were working around the clock, ______supplies to Yushu, Qinghai province after the earthquake. A. sending B. to send C. having sent D. to have sent4. He had a wonderful childhood， _______with his mother to all corners of the world.
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