572. What number should I dial to get the operator? 找总机话务员我该拨什么号？ 

573. I want to make a long distance collect call. 我要打个对方付费的长途电话。 

574. Pick up the receiver and deposit a coin in the slot. 拿起听筒后，放一个硬币在这个小口子里。 

575. I am sorry, but you have dialed a wrong number. 对不起，你打错电话了。 

576. I tried to phone you last night, but the line was busy. 昨晚我想给你打电话，但一直占线。 

577. I am sorry. I was out when you called. 对不起，你打电话给我的时候，我出去了。 

578. He is not in. May I take a message? 他不在，我可以帮你留个口信吗？ 

579. May I talk to Mr. Cooper? 我可以和库柏先生通电话吗？ 

580. Who is that? I don't recognize your voice. 谁呀？我听不出你的声音来。 

581. The telephone is ringing. Would you answer it, please? 电话铃响了，请你接一下，好吗？ 

582. Just a minute. Hold the line, please. 稍等一下，请别挂线。 

583. Put the receiver closer to your mouth, I can't hear you. 请把话筒靠近你嘴边一些，我听不请你的话。 

584. Would you please ask her to call me back this evening? 请你让她今天晚上给我回个电话，好吗？ 

585. I have to hang up now. 现在我该挂线了。