understand? B Yes, I understand. A Do you understand? B o, I don’t understand. A Stand up, please. B Yes, Mr Green. A Good afternoon, Bill. Come in, please. B Good afternoon, Mr Green. Thank you. A Stand up, please. Are you John Smith? B Yes, I am. A Do you understand, John? B Yes, Mr. Green. I understand. A Hi, Betty. Come in. B Thanks, Helen. How are you this afternoon? A Please sit down, Bill. B Thank you, Helen. A It’s time to begin, Bill. B Yes, Mr Green. A Open your book. Please, Helen. B Yes, Mr Green. A Come in and sit down, please. B Thank you, Mr Green. Is it time to begin? A Yes, it’s time to begin. ow read, please. B I don’t understand, Mr Green. Is this lesson one. A Open your book and read, please. B Yes, Mrs Brown. CO VERSATIO A Good morning, John. How are you? B I’m fine, thanks, Bill. Please come in. A Thank you. How is Mrs. Smith today? B She’s very well, thanks. A Please sit down, John. B Thank you. A Let’s read lesson three. B Fine. A Do you understand lesson two? B Yes, I understand lesson two. A Is it time to begin? B Yes, let’s begin now. C Hello, Betty. D Good afternoon, Helen. C It’s time to study now. D Fine, let’s begin the lesson. C Please open your book, Betty. D Yes, let’s read lesson five. C Do you understand lesson five? D Yes, I understand lesson five.