―What’sthematter?Youlookworriedandrestless. ―Oh,nothing...

问题详情：

― What’s the matter? You look worried and restless.

 ― Oh, nothing really serious. As a matter of fact, I _____ of my graduation thesis. I have to hand it in soon. A. am just thinking            B. just thought      

C. have just thought           D. was just thinking

【回答】

D

知识点：过去进行时及其被动式

题型：选择题