21. Could you drive me to the supermarket after supper if _________________?
A. it is convenient of you                         B. you are convenient 
C. it is convenient to you                      D. you will be convenient 
22. _______ his earnings as a football coach, he also owns and runs a chain of sports shops.
A. Except          B. Beside                 C. Apart from         D. In addition 
23. Enough of it! Nobody here thinks what you are saying should make any ___________.
A. value              B. use                   C. fun             D. sense.