It'smore________tobuyaseasonticketifyoutraveleveryday.
A、cheapWeregretto________thatitmaynotbepossibletodealwitheveryrequest.
Idon'tknowhowwecanmake________onthetimetableforanymorecourses.
Sixtypercentoftelevisionviewerschosehimastheir_______actor.
Human behavior is mostly a product of learning ________ the behavior of animals dependsmainly on instinct.
I bought this eighteenth century writing desk at a quite ________ price.
