Unit 12 section A
    一．A)1.has 2.are watching 3.playing 4.did 5.bought (B) 6.fight 7.outside 8.classroom
    9.else 10.hall
    二． CBDCD
    三．1Can eat 2.Come to 3.No don’t 4.Don’t listen 5.other things
    四 1. thoes rules 2.sports shoes 3.arrive late for 4.in the dining hall 5.at classroom outside
    五．CAFDE
    Section B
    一．（A）1. on 2.to 3. from to 4.at on 5.in by at (B) 6.children 7.talking 8.any 9.her 10.speaking 二．1~5. DCABC 6~10. CDADD
    三．1.Do have to 2.Don’t run 3.Can play 4.have fun 5. can’t have to
    四．1.Do you usually help your mom make dinner?
    2.Don’t talk loudly in the classrooms!
    3.I have to go to bed by 10 o’clock.
    4.Do have to go to the Children’s Palase to learn the paino?
    5.Can you meet friends at night?
    五．1~5.CABDA 6~10CBDCA