(have) the policeman known the tourists were in trouble he might have managed to help them out为什么不用had

(have) the policeman known the tourists were in trouble he might have managed to help them out为什么不用had 模仿例句改写以下句子例句：This policeman is tall.But that policeman is taller.He is the tallest policeman I have even seen.题1.This street is clean.2.This man is old.3.This river is long. 英语翻译如题Go to ask the policeman,he ( ) know the place1)may2)do3）have to4)has to policeman i have two brothers.one is a driver,_______is a policeman.A one B otherC the other look at the picture ___ the policeman The terrorist shot the policeman dead. the policeman could not swear to having seen the accused man at the scene of为什么是swear to having 而不是to have MEANING---The policeman came to save the boy in time.---Yes.The boy would have ____died.1.even2.still3.however4.otherwise 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 A policeman came and___(catch)the robber.