Someone left the door of our classroom unlocked yesterday It

Someone left the door of our classroom unlocked yesterday It Is it the key to the door of for classroom 请帮忙分析一下句子成分：Make sure the door is never left unlocked. you needn't have left the door unlocked.john has a key 你不需要留 If you hadn't left the car unlocked,it wouldn't have been st 解释\\\'\\\'finding the door unlocked,I went into the kichen.\ Our classroom is ( )the left ( )the music room. ( ) ( ) ( ) (让我感到惊讶）,the door was unlocked. he unlocked the door as quickly as he could 1.Yesterday we had our classroom______.--So the classroom is Someone is knocking at the door.____ is it? It was almost midnight ( ) she heard someone ( ) at the door