-HowdoyoulikethispieceofmusicbyTanDun?
-Well,ofallthemusicthathehaswritten,Ithinkthisishis_______one.
Thankyouforthe_______thatyougavemewhenIfeltEnglishtoodifficulttolearn.
-This kind of sports is exciting.
-Yes, but it's dangerous. One can't do it_______ he or she has got some training.