21. Mrs Jane, who comes from ______ European country, has formed the habit of attending ______ church on Sundays.
A. an; 不填 B. an; the C. a; 不填 D. a; a
22. Haiher Company produced a new type of refrigerator of high quality and pretty appearance; its only ________is that it takes up too much room.
A. advantage B. drawback C. profit D. mistake
