根据对话内容，将方框内符合对话情景的句子写在对话的空白处，使对话恢复完整。其中有两多余的。 A: Hurry up, we'll be late for the meeting. B: Safety comes first, we must ride our bikes carefully. A: 1 B: 2 A: But there are no policemen in the street now. B: 3 A: OK. Now the light has turned green. B: 4 A: Shall we turn to the right? B: No, this is a one-way street. A: 5 B: We have to ride on till we get to the next traffic lights. You must be careful! Where will we turn right? Let's go across the street, Tom. We mustn't go against the rules. No, don't you see the green light? Let's go now. No, don't you see the red light?