I left a backpack on the train to beijing the other day否定句疑问句和肯定回答否定回答

问题描述:

I left a backpack on the train to beijing the other day否定句疑问句和肯定回答否定回答

I didn't leave a backpack on the train to beijing the other day.Did you leave a backpack on the train to beijing the other day?----Yes I did/no I didn't