The room is in a terrible mess; it ________have been cleaned.

— I haven’t got the reference book yet, but I’ll have a test on the subject next month. — Don’t worry. You ________ have it by Friday.

—What does the sign over there read?—No person        smoke or carry a lighted cigarette, cigar or pipe in this area.

—You will never believe that it took us two hours to get to the restaurant.—Really? You ________ in a traffic jam.

—What do you think of the hotel?—There are no customers in the hotel. It ______ have the friendliest service.