1Benfeedsthedogeveryday(否定句)(用now改成现在进行时)
2Mybrotherhaslunchatschool(用now改成现在进行时)
3Let'ssitonthegrass.)(改成现在进行时)
4Alice,don'trunintheclassroom(改成现在进行时)
5Tom'sfatheris(watchingthebirds)intheaviary括号提问