what____he____do at nine o'clock yesterday?(do)

问题描述:

what____he____do at nine o'clock yesterday?(do)

what was he doing at nine o'clock yesterday?其实很多人填did do 并不错,因为填着有一种探究的以为——昨天九点他做了什么啊?那要看上下文,光这个句子看不出一般过去式.因为它强调结果因此这里用过去进行时更好,即...