she_______the USA three times in 2001

问题描述:

she_______the USA three times in 2001
a went to
b was going to
c has been in
d has been to
which one ,why

D对.
首先,是in 2001过去时.其次,three times 表明要用完成时,则AB不对.又因为是“去过”,C的含义是“去了却没有回来”,所以选D.