how many English words ___ in the psat three years?A.have you learned B.had you learned ,why?
问题描述：
how many English words ___ in the psat three years?A.have you learned B.had you learned ,why?
答
A
这去三年你学了多少英语单词.
过去三年,指从现在开始的过去三年,所以要用现在完成时,