—Hi, Tracy, you look tired.—I am tired. I the living room all day.
---May I attend your lecture, Mr. Green? ---Welcome _____ open arms.
Some people say that we live _____ the age of computers.
What idea can a man who is blind from birth have_____ color?
Because of her devotion _____ music, she has become friendly with Mr. Zhang.
One ____ five will have the chance to join in the game.