21. —Thank you for your wonderful meal.
—______.
A. No, it was just so-so B. The same to you
C. No, that’s all right D. It’s my pleasure
22.——Would you mind giving your advice on how to improve our business management?
——if you make ____ most of the equipment, there will be ____ rise in production.
A、不填;不填 B、the;a C、不填;a D、the;不填