问题补充:
---Has Ingid handed in her paper yet?
---I’m not sure. She on it last week.
A. was working
B. has worked
C. worked
D. had worked
答案:
A. was working
B. has worked
C. worked
D. had worked
解析:考查时态。根据句意可知上个星期她在写论文。指在过去的一段时间内正在做的事情,所以用过去进行时。句意:—Ingid的论文交了吗?—我不确定。上个星期她还在写。