Hethoroughlyunderstoodthesociety__________.
A、Hethoroughlyunderstoodthesociety__________Theboyranoutoftheclassroomwithouttheteacher's_______.
Humanbehaviorismostlyaproductoflearning________thebehaviorofanimalsdependsmainlyoninstinct.
ItwasthreeBritishsportsmenwho________banneddrugs.
Theenginehasbrokenandtheboatis______onthewater.
Thefarmerhadtowearheavybootsinthewinterbecausethefieldsweretoowetand________.
