Thestudentfoundthenovel_______.Itprovidedhimwithsomuchinformationaboutthesubject.
A、enlighteningWemust______thattheexperimentiscontrolledasrigidlyaspossible.
Takeit______.Itisnothingbutajoke.
Weregretto________thatitmaynotbepossibletodealwitheveryrequest.
Aftersomanydayswithoutrain,thegroundquickly________thelittlerainthatfelllastnight.
Hethoroughlyunderstoodthesociety__________.
