英语翻译：1.那时我正在图书馆看书{用到【at the time】}2.老师进来的时候他正在看故事书.在线等!

1 At the time I was reading in the library.
2 He was reading a story book when the teacher came in.
3 He was riding a bike when it started to rain.
4 What was your teacher saying?
5 I wen to see you at three yesterday afternoon, but you were not at home.