题目

改错：When Mrs Clarke was making tea, she heard the sound of the door be pushed open. ________________________________________________________________________ 答案：be→being 句意：当克拉克夫人正在泡茶的时候，她听到门正在被推开的声音。the door being done 为动名词复合结构在此作介词of的宾语。5时=________时________分　　　　 38020平方米=________公顷．