My math teacher is busy and very happyMy is busy and 哪里错了

问题描述:

My math teacher is busy and very happy
My is busy and 哪里错了

My math teacher is busy, but he's very happy.这样才比较顺吧!
你写的单词没有错,放心。

My math teacher is busy but very happy

关联词错了哦

逻辑关系不对,应该是:My math teacher is busy but very happy.
忙但是很快乐~

转折 不应用and 应用 but