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I. 根据下列各句句意以及所给的首字母或汉语提示,写出所缺的正确形式. 1. Much of the land was of poor q______. 2. She’s over 80, but is still very a______. 3. The People’s R______ of China was founded in 1949. 4. Schools try to teach children a set of p________. 5. It was ______ (吝啬的) of him not to invite her. 6. She’s always very ________ (大方的) to the kids. 7. If the earth’s temperature rises, it will be a disaster for all ________ (人类).