Never ________ in line to get on a bus. —Is it not until you mention me ________ I know it?[ ]

填入下面文段空白处的词语，最恰当的一组是有的人在填报高考志愿时选报热门专业， 理由是能学以致用， ① 是一种误解。学以致用的真正含义是将学到的知识用于实践，② 不是看什么东西有用才决定去学。摒弃功利性③ 使人抱着乐观的态度去学习；④ 有用才去学习会使人产生心理负担， ⑤ 总要担心以后会不会真的有用。抱着功利之心去挑选专业， 在往会牺牲自己真正的兴趣， ⑥ 毕业后谋到了不错的职位，也不一定就工作得很开心。① ② ③ ④ ⑤ ⑥

I’m a student from Grade One. I want to become the ______ of the Music Club. — Welcome! But you have to sing well.

His _______ made us so sad that we couldn’t do anything.

People have planted a great many trees in order to________wind and sand in the desert.