laughter ( )___________ v.___________ humour ( )___________ adj.___________ response ( )____________ v.___________ main ( )__________ adv.__________ __ observational ( )____________ v._____________ physical ( )_ __________ physic( )____________ physics( )___________ psychology ( )______ _____ psychological ( )___________ impressionist ( ) ____________ n.____________ v._____________ live (adj./v.)___________;______________ little-known ( )_____________ 反____________ toothbrush ( )__________ v.___________刷 silent ( )_________ _ n.___________ amuse ( )__________ n._____________ adj.__ _________ adj.____________ entertainment ( )___________ |