根据中文意思和英文提示词语，写出意思连贯，符合逻辑的英文文段。所给英文提示词语
必须都用上，中文提示内容不必逐句翻译，每组英文提示所写出的句数不限。
    澳大利亚学生Sam最近又来到北京，去了王府井，发现这里发生了巨大的变化，请你以Sam
的身份给父母写一张明信片，介绍……
    1. happy, visit, again 　
    2. change, take place 　
    3. go, Wang Fu Jing Street, morning, building, shop, market 　
    4. flower, poster（宣传画）, put, for, the Olympics
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Tom是一个英国孩子。他去年来到我们学校，……
1. Tom, English boy
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2. come, school, last year
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3. like, China, Chinese food
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4. visit, many, place of interest, since then
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       根据中文意思和英文提示词语，写出意思连贯、符合逻辑，不少于60词的短文。所给英文提示必须使用。    
      中文提示：你注意到我们的环境问题了吗？如果我们不做一些事解决这些环境问题，可能会发生什么事？应该做些什么？如果我们现在行动起来，20年后……（以河流污染为例）    
      提示词语：    
       the rivers in our city,used to,now,fish and plants,may,get drinking water,be cleaned,put the waste into the rivers,the importance of protecting our environment,in 20 years，…
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有一天早晨，彼得发现了什么？他做了什么？后来呢？
1. one early morning, Peter, find, his chair, dirty
2. change, his chair, with Lucy's
3. when ,Lucy, see the dirty chair, just clean it, carefully
4. Peter's face, turn red, and, he, go up to help her
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Mary和Kate是好朋友。Mary想送给Kate一件生日礼物。但在商店里东西很贵，Mary最后决定为她做一个生日卡。Mary做了一个什么样的生日卡呢？Kate收到生日卡后会怎样呢？
1.Mary, Kate, good friend
2.want to give, a birthday present
3.yesterday afternoon, go, find, expensive
4.card, the words "Happy Birthday", centre, hope, happy, receive