Read the conversation given below and complete the paragraph that follows :
Customer : Why is the meal so sour ?
Waiter : Nobody has complained for five days sir, about the meal.
Customer : What! Where is the Manager ?
Waiter : He has gone to some other hotel to take dinner, sir.
One day a customer was taking dinner in a hotel. He asked the waiter why (a) ........................... . The waiter told him (b) ............................ . At this the customer was shocked and wanted (c) ................ . The waiter replied (d) ............................ .