the boys were playing.they must ---- their homework.

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/12 22:28:29

the boys were playing.they must ---- their homework.
空上填finish的正确形式
大哥们，太牛逼了，1人1个答案

have finished
must后面加动词原形,并且是完成时
如还有不懂的,还可以继续追问哦\(^o^)/~
再问：是have finished，还是finish
再答：因为前面是were所以用完成时,用have finished
再问：你上面那位的答案是finish
再答：看到了男孩们正在玩，他们一定已经做完了作业。这里强调已经完成，就用完成时

the boys were playing.they must ---- their homework. They must have finished their homework,_______. We found some boys in the room.They were playing chess.(合并为一 the boys are playing with their friends.their friends提问 WHAT MUST THEY DO?TH EY MUST DO THEIR HOMEWORK They were playing on the computer （）their teacher came in.A The boys were playing the football 修改错误项 They must have done their homework yesterday,____? They must do their homework after school改为同义句 They must finsh their homework on Friday.改为同义句 They must have done their homework yesterday,___? All the boys finished their homework e____ tony.填什么