she shuddered at the thought that she could have been killed...为什么用at.这是同位语从句吗

she shuddered at the thought that she could have been killed...为什么用at.这是同位语从句吗 She laughed at the ( )show 这句话中if的的意思是什么?The Dursleys shuddered to think what the neighbours would say if the Potters arrived in the street. at the hairdresser's she yesterday be she's looking at the cat. She s___ at the meeting yesterday afternoon Let she look at the book 改错 She grieved at the death of At the meeting she said a_____ nothing. She often active the Internet at night she is at the churchgai cuo She did it at the m___. how did she (be ) at the party She thrust the papers at me. she made the demand that she leave at once She reached at the glass,but it had droppedreached at? She enjoys at the party.改同义句She ___ ____ _____ _____ at the party. She w at him in the car when she saShe w at him in the car when she saw him.