Question

Use correct tense form -----

When he came it (be) all over.

Answer 1

when he came it was all over

Answer 2

The correct tense here is - When he came it was all over. Here the action taking place talks about something of the past. Before the arrival of the person everything was over.

He did not have the scope of doing anything relevant. This is how you get to know about the feasible past action. Likewise the sentence is framed based on the scope and the time of the incident.