情景对话与语篇 — 英语词汇题

读一读，根据对话情境和中文提示补全单词。 Lucy: Look! The bus is coming. Let's run and get on quickly! Tom: Wait! Don't r______（跑）in the street. It's dangerous. Lucy: Oh, I see. We should w______（走）slowly. Tom: Good. And please ke______（保持）to the right when we get on the bus. Lucy: OK. Safety first!