问题补充：
The girl in America for years． After graduation, she returned home, quite at a loss during her hunt for a job．
A. was studied
B. has been studied
C. studied
D. was studying
答案：
A. was studied
B. has been studied
(答案→)C. studied
D. was studying
解析：句意：这个女孩在美国学习了多年。毕业后，她返回国内，为一份工作而很茫然。根据she returned home可知，在美国学习多年是过去一段时间内发生到动作，所以用一般过去时；A. was studied一般过去时到被动语态；B. has been studied现在完成时的被动语态；D. was studying过去进行时。由句意可知选C。
考点: 考查动词时态的用法。
