Question

a) I opened the heavy door.
b) I opened the door slowly.
c) I saw Gandalf in front of me.
d) Gandalf was my old friend
make these 4 sentances in to a big sentance i need help

i got this

I opened the heavy door slowly, and saw my old friend gandalf in front of me. but it is wrong why

Answer 1

i was told there should not be a comma onfront of the and??

Answer 2

but dont we always put a comma before a coordinating conjunction

Answer 3

I opened the door slowly and saw Gandalf, my old friend, in front of me.