补全对话。根据对话情景及首字母提示补全单词。

      (It is Saturday afternoon. Sam and Amy are going to the cinema by bike. They are at crossing now.)

Sam: S___________, Amy! The light is red.

Amy: Oh, sorry. I didn't notice it.

Sam: Don't hurry, Amy. The light is y___________. We must w___________.

Amy: Look! The light is g___________ now. Let's go.

Sam: All r___________.