2019年6月12日上午8时33分，一架专业医疗救援直升机紧急降落在长春市儿童医院停车场．以下是刊登在某英文网站上的一则相关简讯，请你将其补充完整．每空一词．
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An American father made pretty dresses for his daughter out of his old shirts．（wife）
The oceans are polluted by plastic waste． （heavy）
Chinese scientists have successfully cloned （克隆）two ．They are named Zhong Zhong and HuaHua． （monkey）
Children will be in danger in a swimming pool if their parents don't take good care of ．（they）
The second﹣hand car is much （cheap） than the new one．