比如He used to go to school on foot.可以用used或did提问Used(Did) he to go to school on foot?用Did提问回答是Yes,he did,那么用Used提问回答应该是什么
问题描述:
比如He used to go to school on foot.可以用used或did提问Used(Did) he to go to school on foot?
用Did提问回答是Yes,he did,那么用Used提问回答应该是什么
答