句型转换。 l. There are few students in the classroom.(改为反意疑问句) There are few students m the classroom, ______? 2. Our school held a sports meeting last week.(改为一般疑问句) ______ your school______a sports meetng last week? 3.You mustn't cross the road when the traffic lights are red. (改为祈使句) ______ the road when the traffic lights are red. . 4.I came here three days ago. (用for three days改写) _____________________________________________________