用when或 while填空

1.         we were talking in the classroom, the teacher came in.

2.         they got to the airport, it was raining.

3.         she was reading a book,the phone rang.

4.         I saw the boy, he was wearing a new coat.

5.         he was reading,he fell asleep.

Dama（大妈）、Tuhao（土豪）等一些新词也在海外媒体或口头交际中成为热点。截至目前，已有245个汉语借词在牛津英语词典中“安家落户”。从文化生活角度看，这（）

①有利于中华文化走向世界，增强国际影响力

②体现文化多样性是人类文明进步的重要动力

③说明尊重文化多样性需要认同其它民族文化

④表明不同民族文化最终会走向完全融合之路

A.①②

B.②③

C.①④

D.①③