--How do you pay the waitress? ---As a rule, they are paid ____.
29.Our English teacher had us all _______our names on a card.
28.The ______ student standing at the gate speaks very good Chinese.
27.Even at the narrowest of the Pacific, it is about 3,200 km ____________.
26.She ____ the hospital so soon, for she has not yet recovered.
25.After studying chemistry for years, I can only say I have ___ general knowledge of this subject.