It was very kind of you to clean the office, though you___A needn't do B wouldn't have C didn't have to D mustn't have done 选哪个,为什么现那个.谢谢

问题描述:

It was very kind of you to clean the office, though you___
A needn't do B wouldn't have C didn't have to D mustn't have done 选哪个,为什么现那个.谢谢