6、______,chooseaseatinthesmokingsection.A.mustB.shouldC.mayD.can16.They_______havearrivedatlunchtimebuttheirflightwasdelayed.A.willB.canC.mustD.should17. It is _______ you deal with difficulties that shows _______ you are really like. A. what; what B. how; what C. how; that D. which; how1
7、8. My parents don’t care _______ my pocket money goes, but one thing is sure: the money spent must be worthwhile. A. why B. when C. where D. how19. Have we decided to turn to _______ can help us out of trouble?A. whom B