祈使句的肯定与否定形式 — 英语填空题
题目
校园安全周到了，Mike正在整理安全提示。请根据句意和括号内的提示，用祈使句的肯定或否定形式补全句子，每空一词。1. The floor is wet. ______ ______ (not, run) in the corridor. 2. ______ (look) both ways before you cross the road. 3. ______ ______ (not, play) with fire. It's very dangerous. 4. ______ (put) on your helmet before you ride a bike.