He was busy writing a story, only once in a while to smoke a cigarette.
Through the reform, the economic situation of China ______ much better than it used to be.
Frank studied _____English language in London for four years, so he gets ____ good knowledge of London.
You won’t be able to see him because he ______ a meeting in Suzhou when you arrive.
. Some evidence threw doubt on ______ he had lent the money to the defender.
She took her son, ran out of the house, and ______ him in the car, drove quickly to the nearest doctor’s office.