为什么这样写looking sadly at his mother,the litter boy looked sad

为什么这样写looking sadly at his mother,the litter boy looked sad he looked sad at the news 为什么不是sadly they all looked sadly at the tea cher and felt quite sad 这个中 look sadly at the boy和look sad at the news Rose looked ----- at the boy .His face looked very --- Look at the boy .He ( ) his mother.A.looks like B.is looking The man looked ---.He was looking---at his son.He looked---a Tom looked _________(unhappy/sadly)at the bad news.sadly是副词吗 改错 he looked sad at the letter He looked ____ after he finshed the work well A sad B sadly The bad news made us sad为什么不用sadly When he looked _____ at the picture ,he looked _______(sadly