Question

【题目】All the people had to wear face masks when they went out. (改为一般疑问句)

_______ all the people _______ to wear face masks when they went out?

Answer 1

【答案】Did have

【解析】

句意：所有的人出去时都得戴口罩。

根据句意理解及原文动词had可知，原句用的是一般过去时，所以这里变成一般疑问句需要加助动词did，且疑问句直接把助动词did提前即可，而加了助动词，原来的动词要变成原形，故答案为Did，have。