作文：A/An（）moment先到先得!闲人死开（考试中）开头：L would never forget

A moment

An一般用在a e i o u开头的元音音素的词前,这里moment开头是辅音,因此用A

I would never forget my good history teacher in my primary school. He was a very kind teacher with thick glasses on his eyes. The history class he taught was very interesting and often made his class lively and unforgetful. He used to help us solve a lot of questions that we could not understand.He always told us to study hard and tried our best to make a contribution to
realizing our modern motherland. He is so good a teacher that I would remember him foreve