题目内容
请用介词、副词填空
There are two sets ________ Games, and the Winter Olympics are usually held two years ________ the Summer Olympics．
答案：of,before
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智趣寒假作业云南科技出版社系列答案题目内容
请用介词、副词填空
There are two sets ________ Games, and the Winter Olympics are usually held two years ________ the Summer Olympics．
智趣寒假作业云南科技出版社系列答案