完形填空 51.people can`t+tell 52.was having++trouble 53.was not++easy 54.composer`s brains++work 55.they take++out 56.what is++left 57.cope built++huge 58.;it++broke 59.combined the++pieces 60.it could++collect61.The++process 62.used the++ones 63.a great++success 64.knew exactly++how 65.her music++so