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Tom's monther kept telling him to work harder ,but A didn't help.A it B she C whicD who 为什么选择A 不选择C呢?

题目详情
Tom's monther kept telling him to work harder ,but A didn't help.
A it
B she
C whic
D who
为什么选择A 不选择C呢?
▼优质解答
答案和解析
it是指他妈妈告诉他要努力学习这件诗的代词
代词应该是it
which当代词一般是定语从句里面的引导词