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It would help if you could reply early.
It would help if you could check with him.
If you don't mind, could you try this out?
It would help if you could prepare the materials.
If you don't mind, could you give me a ride?
It would help if you could tidy up first.
If you don't mind, could you lend me a hand?
It would help if you could call later.
If you don't mind, could you give me a moment?
It would help if you could help with that.
If you don't mind, could you start without me?
It would help if you could double-check just in case.