---Does_______ have a dog?---Yes, I have a dog. She's nice to_______.
He lost his key.It made him________in the cold to wait for his wife’s return.
—What would you do if you had one million dollars?—I would________to the medical research.
—Your tea smells great!—It’s from India.Would you like________?
The World Health Organization has given some advice on________to protect us from being infected(感染)with H7N9.
—What do you usually help your mother________?—I often do the dishes.