I __ he had finished his homework at this time

I __ he had finished his homework at this time 1.Only when he had finished his homework __ go outside to pl 1.He told me (that)he had finished his homework 2.At her lon __ finished his work ,he had to stay at home at the weekend. He had finished his homework before he watched TV He had finished his homework already.(改为否定句) He had finished the homework when I got home. he finished his homework _____. He___until he finished his homework? I waited until he had finished his homework.请问这句的过去完成时为何是用在f 改被动语态He was doing his homework at this time yesterday . He does his homework every day用at this time yesterday改写句子