1、He traveled to many mountain villages and saw many poor children out of school.This experience _____ his life.
问题描述：
1、He traveled to many mountain villages and saw many poor children out of school.This experience _____ his life.
A would change B had changed
C was to change D was changing
选什么为什么,为什么不用B
答
C
若B,则改变他的一生的动作发生在traveled to.之前,与题意不符,应为将要改变,又∵是过去,∴用过去将来时