31. Customer: "Could you bring me some water?" - Waiter: "___"
A. Certainly, sir. is the most appropriate response. It is a polite and affirmative way to acknowledge the customer's request.
32. Customer: "Can I try on a smaller size?" - Shop assistant: "___"
A. Of course. is the most suitable response. It is a polite and affirmative way to grant the customer's request.
33. "Please lock the door carefully before you leave the room" - "___"
B. Sure, don't worry. is the most appropriate response. It indicates that the person will follow the request and assures the speaker that they will be careful.
34. Mary: "Will you help me with my homework, please?" - "___"
B. Sure, don't worry. is the most suitable response. It indicates that the person is willing to help and assures Mary that they will do their best.