The room is in a terrible mess; it __________ have been cleaned.
—Excuse me, I want to have my car repaired, but I can't find a garage.—I know where ________ is.Come on, I'll show you.
Several of the passengers were hurt and one was taken to hospital.Luckily ________ was killed.
—Shall I attend my friend's comingofage ceremony, Mum?—No, unless you see to ________ that you will be home before 10:00 P.M.
Before selecting the curtain for your newly decorated house, it's important to know what colors look great ________ the wallpaper.
—What are you two whispering about over there?—Oh, ________.Just small talk.