Theboyranoutoftheclassroomwithouttheteacher's_______.
Thestudentfoundthenovel_______.Itprovidedhimwithsomuchinformationaboutthesubject.
_______themovieIwouldhavefinishedmypaperlastSunday.
Becareful,_______you'llfalldown.
Wemust______thattheexperimentiscontrolledasrigidlyaspossible.
Itisusefultoscience_______theearthasanobjectinspace.