In the U.S, ______a tip is thought to be polite when paying the bill.
You should thank Peter. It was he who finally ____ your son to stop smoking and playing computer games.
— Tom, Miss Lee asked you to go to her office as soon as you arrived.— ____ What did she say?
All the photographs in this book, _______ stated otherwise, date from the 1970s.
Since people are fond of humor, it is as welcome in conversation as _______ else.
Everyone wants to live in a beautiful, comfortable and “livable” place, but not ______ know where it is.