Нужно составить 10 простых предложений с Present Perfect и Past Perfect passive (has/have been, had been)

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The project has been completed by the team.The report has been submitted to the supervisor.The boxes had been unpacked before we arrived.The meeting had been canceled at the last minute.The documents have been signed by the CEO.The problem had been resolved by the IT department.The application has been approved by the committee.The car had been repaired by the mechanic before I picked it up.The house had been cleaned before the guests arrived.The cake has been baked by the chef.