I think it our duty to study.I think it completeI think it our duty to study.I think it complete a waste of money.为什么第一句是对的,第二句却是错的?

分类: 作业答案 • 2021-12-19 18:02:55

问题描述：

I think it our duty to study.I think it complete
I think it our duty to study.
I think it complete a waste of money.
为什么第一句是对的,第二句却是错的?

答