John opened the door. There _____ he had never seen before.
—What field will your son go into after graduation from Nanjing University? —I’m not quite certain, but he ____ a good teacher of English.
The factory had to a number of employees because of economic decline in the country.
Shortly after the book Uncle Tom's Cabin________, the Civil War of America________.
Don’t make any noise or I will be ____ mad.
His joke went so far that it was more than his girl freind could_________.