He can't have finished his homework,__he

He can't have finished his homework,__he he have no finished his homework,he doesn't finish his homew He must have finished his homework,he A,mustn't B didn't Cha he must have finished his homework last night,didn't he?为什么是 He must have finished his homework,_________________(是吗?） tom has finished his homework doesn't he he finished his homework _____. He___until he finished his homework? He didn't go to bed until he finished his homework.从句中的he可以省 He went to sleep after he finished his homework.同义句 He _go t he could have finished his homework,but he c（） not to As soon as he finished his homework