which,best,so,biology,geography,history,date,meeting,o'clock,ok,gate,so,show,around,showsbaround,front,infrontof,building,ground,groundfloor,bright,modern,hall,diary,lookat,wall,letmesee,afterclass,pardon,phone,onthephone,from...to...,take,getup,gotoschool,a.m,p.m,readingroom,only,sure,kind,allkindsof,borrow,borrow...fron...,letter,few,afew,away,farawayfrom,onfoot,best,allthebest这是U3的