Our country _____ progress in science and culture in recent years.
—Could you turn the TV down a little bit?— Is it disturbing you?
—Where’s that report, Daniel?—I brought it to you you were in Mr. Black’s office yesterday.
In crowded places like airports and railway stations, you take care of your luggage.
—Did Alan see his old friends yesterday?—Yes, he did. He his old friends for several years.
—It is selfless the doctor to devote all the time he had to caring for the patients.—I think so, they are so great.