Albert found the key.I lost the key.(合成一句)

Albert found the key.I lost the key.(合成一句) Albert found the key.I lost the key yesterday.（合成一句） Albert found the key .I lost key yesterday(合并为一句） Albert found the key ( ) ( ) yesterday. I don't know ___ Joe found the lost key. Xiao Wang found mo the key ______ I lost yesterday. Xiao Wang found the key.i lost the key yesterday变为定语从句 my key is in the lost and found case 这一句话后面可以跟一句什么? the key,___ he lost ,has been found in,the,that,your,and,lost,found,box,key,is in the that your and lost found case key is key some are the lost and found case in连词成句 请快速回答