________ they've got to know each other a little better, they get along just fine.

Thestudentfoundthenovel_______.Itprovidedhimwithsomuchinformationaboutthesubject.

Human behavior is mostly a product of learning ________ the behavior of animals dependsmainly on instinct.

Whenhesuddenly________upthesubjectofgeneticengineering,therewasanembarrassedsilence.

Attendanceatfootballmatcheshave_____sincethecomingoftelevision.