Generally, the oral arguments are supposed to be brief. So, you can try to cover the main points in your favour in the written submission even if you could not get time to cover some of them in the oral arguments.
Nobody can stop you from mentioning about the evidence in the written submission which had earlier been rejected by the court. Usually, it should be avoided if it has been rejected by a written order of the court.
Not possible to understand your third question.
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