History is the best teacher. It _________ records the development of every period, whether it is good or not.
_________, so he is afraid of dogs .
Asiswidelyacknowledged,playingoutsidehelpschildrenlearnthroughcuriosity, which , _ __, promotescreativity.
--Life____beveryhardforpeoplelivinginthenorthofCanadaasitisvery coldthereinwinter. —Yes,theweatherthere_____beaslowas60℃belowzero.
— Whichofthetwinbrothersiseasiertogetonwith? —_____youngerone.Heis____mosthumorousman.
For quite _____ students,their teacher's advice is more important than _____ of their parents.