假如你叫王涛，因患重感冒，不能去上学，需请假两天。请你参考下面所给的词语，给你的外籍
老师写一张请假条。20-30词左右
     参考词：a bad cold, can't go to school, ask for two days leave
Dear Mr. Green,
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                                                                                                                                        Wang Tao