he said that he ______________ canada a few years ago

问题描述:

he said that he ______________ canada a few years ago
A.have been to
B.has been to
C.went

C
过去时a few years ago算不算一个i时间点?是过去的时间。


一般如果用现在完成时,都是用标志的
比如,for + 时间段; since+..... 等