The doctor did what he could ________ the dying man.
—What would you like?—I’d like ____ orange juice, please.
—Who is that young man ____?—He’s Jack, my brother.
—You’re thirsty(口渴). ____ have a glass of milk?—Good idea.
—Is Mr. Brown a good teacher?—Yes. He is kind ____ us. We love him.
—Is this a photo ____ your family?—Yes, it is.