In a competitive and fast-paced modern society, busy business executives are so engrossing in their work that they hardly know (1)______ what the word "leisure" means. The higher an executive’s posi- tion is on the business ladder, the more hours he spends on his work. With a view to gaining greater corporate standing or a big (2)______ pay rise, he, as a rule, far exceeds over the 40-hour working week. The additional stress and tension (3)______ as well as the shortage of suitable rest and recreation very often (4)______ have a disastrous effect on his health．Few such executives rea． lize that unless they learn how to relax，they will soon run of (5)______ steam before they get to the top of the executive ladder．A not- ed American authority on leisure has said that "The key to relax- ation to busy executives is to avoid the types of activities that are (6)______ part and parcel of their daily work and to devote themselves to- tally to have recreational pursuits for at least a part of each day， (7)______ even it is only for half an hour．Those (8)______ jobs require a great deal of contact with others can engage in ac- (9)______ tivities that are quiet and peaceful—far from the madding crowd，far from client and business associates." (10)______