The secretary was __________ his hands and knees searching f

The secretary was __________ his hands and knees searching f The drunk was on his hands and knees,looking for something u Then he went down on the ground on his hands and knees 在his 翻译on sb hands and knees 帮忙翻译一句话：She crawled backward on her hands and knees to the r Everybody got down on their hands and knees to look for the The pain made me fall down on my hands and knees 什么意思,这里是fal The murderer was brought in,with hie hands _tied__behind his The man was caught by police,with his hands tied. The man was brought in with his hands tied back The boy was reported to be lost and the police are searching the old man fell down and hurt his knees by a_____