In case I _____, I would try again.
—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.
Frankly speaking, ________ of them knew what the other was doing that morning.
Our refrigerator is ________ again.We'd better buy a new one instead of repairing it.