Question

—My mother broke in when I             online with my pen pal this morning. She punished me and warned me against using the computer this term.

  —That’s why you are so unhappy now. You should have used it after your mother said yes.

A. am chatting    B. chatted    C. chat    D. was chatting

Answer

D

【解析】句意：——今天早上我和笔友在网上聊天时，妈妈突然插嘴。她惩罚了我，警告我这个学期不要使用电脑。——这就是你现在这么不高兴的原因。你应该在妈妈说“是”之前使用它。考查动词时态辨析题。本句是时间状语从句，when引导的从句动作和主句同时发生，需用进行时，可排除BC两项。根据主句时态，可知选D。