–Whatwasyourbrotherdoingatthistimeyesterday? –Hewasread...

問題詳情：

–What was your brother doing at this time yesterday?

  –He was reading a magazine ________ I was writing an e-mail at home.

A. as soon as B. after     l      D. while

【回答】

D

知識點：連詞

題型：選擇題