The correct answer is salimos. This means We left school at three in the afternoon. Te other 3 would say: come out, you go out, or go out.
No jugaba mucho con los niños del vecindario, ellos no son amables.
The verb that is in the incorrect past tense form is decia because when it says it in the sentence, it would be mé dijo instead.
The answer is decía. Hope this helps! :)