最初提出“交际能力”这一概念的是______。
备课就是写教案。
Previewingisatechniqueofallowingyoureyestotravelrapidly______apage,stoppinghereandtheretoregisterthemainidea.
Bodylanguageisapowerfulcommunicationsystem,______itcansignalverydifferentthings.
Ifit______rainheavily,thecitywouldhavegreattroublebecauseofitspoordrainagesystem.
