Which sentence is NOT awkward?

I went to the store and buy fruit and vegetables; he went to the store and buys candy and ice cream.

I go to the store and I bought fruit and vegetables; he goes to the store and bought candy and ice cream.

I went to the store and bought fruit and vegetables; he went to the store and bought candy and ice cream.

I went to the store and bought fruit and vegetables; he goes to the store and bought candy and ice cream.