Human behavior is mostly a product of learning ________ the behavior of animals dependsmainly on instinct.
A、soD
暂无解析
The problem ________ when the students refused to do their homework.
She ________ her nervousness to the importance of the interview.
Theoppositionleaders________thegovernmentfornottakingactionsooner.
Wemust______thattheexperimentiscontrolledasrigidlyaspossible.
Theassociationis________toraisingfundstohelptheblind.
