31.A.closing B.opening C.proper D.holiday
30.A.early B.late C.fast D.big
29.A.hand back B.save up C.hand out D.take back
28.A.when B.before C.after D.until
27.A.hear B.notice C.share D.search
26.A.know B.mind C.understand D.realize
25.A.rush B.come C.glance D.drop
24.A.school children B.passengers C.passers-by D.bus drivers
23.A.anxiously B.excitedly C.hurriedly D.patiently
22.A.ride B.chance C.children D.friends