1.We should study hard (一般疑问句) __Should we study hard__________________? Yes,___you_ __should_____. No,_you____ ___shouldn`t___. 2.You should see a dentist.(否定句) You __shouldn`t_____ __see____ a dentist 3.He has a backache (划线部分提问) 划has a backache ____What`s wrong with him__________?注意最后一题,其他的人是错误答案