in which sentence are all pronouns used as objects of a preposition used correctly? 1. the next song was written by you and me.2. i'll find a good seat near doug and she.3. show the pictures to ginny, us, and them.4. you can enter the cave with ed and i.

I think it's number 1, as 2 and 3 are definitely not correct. In regards to number 4, if you took "Ed and" our of the sentence then saying "You can enter the cave with I." does not make sense, whereas if you took "you and" out of number 1 it still makes sense.

I think it is number 4 because 2 and 3 don't work (if you say them out loud it sounds funny and doesn't work) and number 1 should be "the next song was written by (e.g Tom) and I"