根据图意或首字母提示, 将下列对话补充完整, 每空一词。

A: Please stop, boys.

B: Why?

A: Can't you see the red man? You m cross the road now. You must w.

B: OK. W can we cross the road?

A: When there is a g man, you can cross it.

B: Thank you, madam. We got it.