close和closely做形容詞和副詞的區別,急!

壹般有LY的表示抽象， 沒LY 的表示具體close做副詞用時意為“靠近地”，表示具體意義 close作形容詞表示關系近closely意為“緊密地，密切地”，表示抽象感念1.They're __close______friends in the class,They always sit ____close______.(close)2.When the teacher came into the classroom,he watched every student __closely_______.(close)