Found the door unlocker,we entered the office.这句话对还是错.错了,如何改正?

连词成句：by the the he purse door found. P______,he has found the key to the door填空 组成句子：found a they standing boy the door at . 翻译I found the door to be open i found it by the door this moring Alice found a key( ) the door on a small table I found the door was open(closed).=I found the door open (closed ) 如果不对 怎样是对的? The next day,the old man found the poor dog___(die) at the door She was angey when she found the door was locked.She was angry _____ _____ the door was locked. I forget ____(close)the door.when I came back to lock the door.I found it closedclose 还是closing? The policewman at last found the box from ＿＿＿the door .填介词 You have found your lost umbrella,haven't you? Yes,I found it behind the door this morning.为什么答语中found不用have found? _____ the door unlocked,i went in.A.Finding B FOUND C HAD FOUND D have found 我觉得having found 好像更合适. I found the door open when I got home为什么不是opening?或动词不定式I found the door to be open when I got home 那I found the door to be open when I got home等不等于I found the door open when I got home Peter was about to unlock the door when he found someone had broken into the she found the dog什么at the door a,die b,dead c,death d,dying When he opened his door,he found everything in the room was g___