问题
选择题
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
答案
C。
be to do表示预定，命运，意为“注定要……”。本句意为“这个经历注定要改变他的生活”。A项表示过去将来，意志或倾向。