Hi Charles, In answer to your first question, the use of 'on' is to qualify where the saving will be made. ad nauseum And in answer to your second; 'in delivery' is descriptive of the state of a pregnant animal that is currently giving birth. I hope this helps.
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ugyAnd in answer to your second; 'in delivery' is descriptive of the state of a pregnant animal that is currently giving birth.Thanks a lot ugy. So you mean that I can't say "my mail is in delivery", correct?