—Icalledyouyesterdayevening,butnobodyanswered. —Oh,

问题详情：

—I called you yesterday evening, but nobody answered.  

—Oh, ______ at that time.

     A. I’m cooking              B. I cooked              C. I cook           D. I was cooking

【回答】

D

知识点：动词时态

题型：选择题