Which sentence is most appropriate grammatically?
1
I went to the grocer and I bought some toffees or I dropped them on the way home.
2
I went to the grocer but I bought some toffees and I dropped them on the way home.
3
I went to the grocer and I bought some toffees but I dropped them on the way home.
4
I went to the grocer and I bought some toffees and I dropped them on the way home.