[ ]
A. Don't smoke here.B. Keep off the grass.
C. Be quiet, please.2. 观看射击比赛时，有人在大声喧哗，你应该提示他说：
[ ]
A. Be quiet, please.B. Shout loudly, please.
C. Stop shouting. 3. 有同学在教学楼里打篮球，老师会提示他说：
[ ]
A. Let's not play basketball here.B. Don't play basketball here.
C. Don't kick the ball here. 4. 当你为别人指路时，你会说：
[ ]
A. Welcome.B. This way, please.
C. Please ask others. 5. 在学校门前禁止停车，应该提示大家说：
[ ]
A. No parking!
B. No car!
C. No photos!