____turn colour and fall to the ground is a sigh of late autumn
问题描述：
____turn colour and fall to the ground is a sigh of late autumn
A that leaf
B that leaves
C those leaf
D those leaves
为什么是B
答
B that leaves
这是一个含主语从句的复合句,that leaves turn colour and fall to the ground就是主语从句,其中that为主语从句的引导词,不是修饰leaves