have这边用动词原形因为前面有助动词did如果帮到你，请记得采纳，O(∩_∩)O谢谢
it'stime__tohave_____（have）lunch.it'stimetodosth意思是“到做某事的时间了”heis___watching____（watch）tvnow.后面有“now”所以是进行时态
