There was an _________ look on his face when he knew the bad grade of his son.
I looked through the window of our hotel, ______ I saw a man taking photos in the yard.
In much of the animal world, night is the time ______ for sleep – pure and simple.
--Thank you for the suggestions you kindly offered us. --______. It is really an honor to help you.
--You’ve got your flat furnished, haven’t you? --Yes, I ______ some used furniture and it was a real bargain.
The world is more forgiving than commonly ______, so we should be optimistic about life.