<正> 1. There is nothing in the room, is there?2. John often goes to the park on Sundays, does’t he?3. Joan didn’t finish the work yesterday, did he?4. Open the door, will you?5. Let’s have a rest, shall we?6. Tom has few friends in China, has he?7. Nobody is in the classroom, are they?8. He missed the bus, didn’t he?9. Something is wrong with the machine, isn’t it?1O. I’m a student, can’t I?