why were you so excited在变in indirect时为什么变成why he had been so excited
对某人来说做谋事是挑战是it is a challenge to sb to do?
simpiy和only是界词？
an advance teacher advance to date分别是有前途的老师和提前日期
dolphin living in the wild do not like to be touched by humans为什么用living不用live
另以上短语或句子有1错误请找出
第一句，Why were you 是直接引语，对你说的，要改成间接引语就变成对他说，所以是Why he had been...
it is a challenge for sb to do.
simply和ONLY是介词
an advance teacher advance to date分别是有前途的老师和提前日期，正确。
living是分词形式，用live是动词，而句子中已经出现do not like一个谓语动词了，不能再出现第二个动词
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