“Irangyouat9:30thismorning.Butnobodyanswered.”   “Oh,I...

问题详情：

 “I rang you at 9:30 this morning. But nobody answered. ”

    “Oh, I _________ in my office at that time. ”

    A. had worked         B. will work       C. was working     D. worked

【回答】

C

知识点：动词时态

题型：选择题