Corresponding the mistakes: A was seeing him at 6 o clock yesterday? She didn't knew that man. Mishandle had met Robin

1. A was seeing him at six o\'clock yesterday? ( This is the Past Simple \" Did you see him at six o\'clock yesterday?)

2. She didn\'t knew that men. ( This is the Past Simple \" She didn\'t know that men\").

3. Mishandle had met Robin before he met Rob. ( This sentence is correct)