1,The book must be Jim's.(改为反义疑问句)
1,The book must be Jim's.(改为反义疑问句)
2,Maybe your books are at home.(改为同义句)
3,The man outside the door must be Mr Green.(改为改为否定句)
4,This could be (Robert's) basketball.(对括号内内容提问)
5,He could be running for (the early bus).(同上)