—What was your brother doing at this time yesterday?
—He was reading a magazine ______ I was writing an email at home.
- A.as soon as
- B.after
- C.until
- D.while
答案
正确答案:D
知识点:(英语)连词

根据句中时态,应选择while表示同时发生。

不能结合题意选择合适的时间连词。
