请.会英语的帮忙11.47.They are pleased to switch it off when they do

请.会英语的帮忙
11.47.They are pleased to switch it off when they do not like the programme or change to the other ______.A.channel
B.title
C.volume
D.version
满分：5 分
12.76.They gave _______ broadcast while the performance was in process on the stage.A.alive
B.live
C.living
D.lively
满分：5 分
13.51.I'm excited about the ______ of going to the States.A.request
B.division
C.possibility
D.reality
满分：5 分
14.68.He only ______ the letter I handed to him but signed it anyway.A.studies
B.scanned
C.saw
D.stared
满分：5 分
15.62.Not a ______ has been found so far that can help the police find the criminal.A.crew
B.clue
C.crumb
D.sign