答案：They had a good time on the Great Wall.

或： They enjoyed themselves on the Great Wall.

解析：have a good time = enjoy oneself 玩得愉快,玩得開心,而且是發(fā)生在過去的事情,用過去式.


希望能幫到你,祝更上一層樓O(∩_∩)O
有不明白的請繼續(xù)追問,可以詳談嘛(*^__^*)