21. I would really appreciate ______ if you can make time in your schedules to attend my lecture today.

A. that               B. it                 C. this                 D. one

22. The practice of a lawyer requires not only detailed knowledge of certain aspects of the law but also______ with court procedures.

A. acquaintance        B. administration       C. consequence         D. presentation

23. Recently, to maintain national balance, the Chinese government has______ a policy of encouraging college graduates to take positions in rural areas.

A. adopted            B. admired            C. adapted             D. admitted