The students _______ busily when Miss Brown went to get a book she _______ in the office.
—What about the concert last night?—___ I might as well have stayed at home and watched TV.
_____got into the room, _____ the telephone rang.
The majority of the damage ______ easy to repair.
—How are things going?—The disabled ________ no relatives in Guangzhou ________ by the volunteers, who will graduate from Zhongshan University next year.
Unluckily, when I dropped in, Dr. Smith ____, so we only had time for a few words.