The policeman kept his eyes------on the screen of the on the screen of the computer toidentify the criminal's footprintsA fixed B fixing c being fixed d to fixe答案是A为什么?我选的是B不行吗

the policeman kept his eyes _________ on the screen of the computer to ident .The policeman hid in the corner of the street and kept his eyes________on the suspect.A) fix B) .The policeman hid in the corner of the street and kept his eyes________on the suspect.A) fix B) to fix C) fixed D) fixing 单项选择 （英语） The policeman kept his eyes open for a long time but saw_____.A nothing unusual B unusual nothing C something unusual D unusual something he kept a little notebook,in which were written the names and addresses of h kept the gate是什么意思 The policeman kept his eyes____on the screen of the computer to identify the criminal'sfootprints.A.fixed B.fixing C.being fixed D.to fix为什么选A呢? policeman look at the picture ___ the policeman The terrorist shot the policeman dead. kept a policeman came into the dining-room . You can ask the policeman 翻译 The policeman caught some ( ) last spring.(thief) 初一英语填空：The policeman s() Mr.Brown. the police,policeman有什么区别吗? He's dead.The policeman said_____ The man s_____ to be a policeman. please go and 什么 the policeman