21．—We are planning to have a casual get-together this Saturday or Sunday. Are you coming?
— ________. I’ve got rather a full day this weekend.
A. I hope so B. Sounds great C. I’m afraid not D. You’d better not
22. ______ world’s largest retailer, Wal-Mart, has opened its _____ third store in Beijing, which means the firm now has 52 stores in China.
A. The; a B. A; a C. The; the D. The; /
