Underline the correct answer A: Good morning, madam. May/mustI help you?B: You might/mustn’t be able to. I need a ball

A: Good morning, madam. May I help you? B: You might be able to. I need a ball of wool that is the same colour as my jumper. A: Just a moment, please. I must look in the stock room. We might have some left. I’m not sure. B: The wool must be exactly the same colour, it mustn’t be different. A: Could I ask you a question, madam? B: Yes. A: What do you want the wool for? B: I must finish knitting this jumper. It only has one sleeve at the moment!