问题描述:
jenny is only three years old .she is too young _______alone at home
A to leave B to be leaving C to be left
D to have been left
这道题我是先看是否被动'去掉A
A to leave B to be leaving C to be left
D to have been left
这道题我是先看是否被动'去掉A
问题解答:
我来补答展开全文阅读