l'm glad you've come back from london.Please tell me__________A,how long you had stayed there.B,how long you stayed there.选的是B但是为什么呢?

问题描述:

l'm glad you've come back from london.Please tell me__________
A,how long you had stayed there.
B,how long you stayed there.
选的是B但是为什么呢?

stay 表示逗留.不用完成时了.
或是.
how long you had been there..