Work in pairs. Complete and practice the following conversation with your partner in turn.（从上到下，从左到右填写数字)A: Good afternoon. May I speak to Mr. Lamb?B: ________. Who is it?A: Mr. Lamb, this is Rachel Flint from Nova After-Sales. You complained about _______________________ in the morning. __________________?B: So far, it still refuses to work. And I don’t see any sign of improvement.A:I’m terribly sorry for the inconvenience._______________________.B: Do I have to pay for the technician’s service?A: Since you are still under warranty, __________________________.B: OK. I am glad to hear that.A: If there is anything wrong, ____________________.B: Thanks. I will.1.the repair service is free of charge2. Is it working now3.This is he4. a broken washing machine5. please give us a call6. We will send a technician to repair it immediately