A study ________ in the U.S.A. in 1977 showed that the chemical ASA in aspirin could prevent a stroke. A. carrying out B. carried out C. working out D. worked out
——Why was our foreign teacher unhappy yesterday? ——News about the tsunami striking her country ____ an attack of homesickness.
That car nearly hit me; I ______.
—The secretary wrote __________ note to the manager. —I guess she forgot writing one.
Beck is an honest businessman.Our company and his have had a lot of __________ in the past five years.
—It is very cold today. —Yes.Surprisingly cold __________ May.