一、选词填空，组成短语，并根据短语意思将对应的图片序号填在题前括号内。
wait, clean, do, listen, ride, use
()1. to the teacher
()2. homework
()3. the blackboard
()4. a cellphone
()5. a bike
()6. in line

1. C; listen 2. A; do 3. E; clean
4. B; use 5. D; ride 6. F; wait

二、根据生活常识和习惯，判断句子的正(T)误(F)。
()1. You must do your homework on time.
()2. You must go to bed late.
()3. You mustn't read in bed.
()4. You must listen to the teacher in class.
不准在课桌上乱写乱画!

1. T 2. F 3. T 4. T

三、根据图片提示，用 must 或 mustn’t 填空。
1. You write on the desk.
2. You play football in the street.
3. You go to bed early.
4. We walk on the right side.
5. You pick flowers in the park.
6. You throw the rubbish on the ground.

1. mustn't 2. mustn't 3. must
4. must 5. mustn't 6. mustn't