When Alice came to she didn’t know how long she there.A. had been lyingB. has been lyingC

问题补充：

When Alice came to, she didn’t know how long she there.

A. had been lying

B. has been lying

C. was lying

D. has lain

答案：

(答案→)A. had been lying

B. has been lying

C. was lying

D. has lain

解析：句意：当Alice到达时，她不知道自己在那里躺了多久了。指从“过去的过去”某一个时间点开始的动作或状态，一直延续到过去，用过去完成进行时，选A。