题目内容
I first met Mr Smith in America. He ________ at Stanford University then.
A. studied B. had studied C. is studying D. was studying
D
本句选用过去进行时,指那时动作正在发生。
练习册系列答案
相关题目
题目内容
I first met Mr Smith in America. He ________ at Stanford University then.
A. studied B. had studied C. is studying D. was studying
D
本句选用过去进行时,指那时动作正在发生。