请仔细听，根据听到的内容选择相应的图片，将A、B或C填入前面的括号内。每组句子读两遍。（5☆）
“No littering” means __________．
The different public signs__________．
This public sign means “Danger”，We must__________．
“There is no one nearby” means__________.
I'd like to__________ a walk in the park·
粤公网安备 44130202000953号