I first met Mr. Smith in America. He ___
题型:选择题
问题:
I first met Mr. Smith in America. He ______ at Stanford University then.
A.studied
B.has studied
C.is studying
D.was studying
I first met Mr. Smith in America. He ______ at Stanford University then.
A.studied
B.has studied
C.is studying
D.was studying