I DID NOT ANSWER THE DOOR EVEN THOUGH I KNEW IT WAS MY FRIEND.A. U...

34. I did not answer the door even though I knew it was my friend.a. unless I knew it was my friend, I would not answer the door.b. I knew it was my friend, but I did not answer the door.c. Only when I answered the door did I knew it was my friend.d. I answered the door since I knew it was my friend.