Light goes faster than sound.
---Hello, this is Mike. Is Dr. Li in?---Sorry, he_________ to the west of Africa to help the patients there.A.has been B. is going C. has gone
His talk was nothing but milk and water. “milk and water” here means________.
— You look nice in the red skirt !—_______________________.
—_______is your husband?— A doctor. He works in a hospital near our home.
—Where is your sister?—She _______a book in the yard.