1) Michael moved the boxes out of the way.
The boxes were moved out of the way by Michael.
2) They will open the new sports center soon.
The new sports center will be open soon by them.
3) Tom hasn't cut the grass yet.
The grass hasn't been cut yet by Tom.
4) Steve hasn't opened the mail yet.
The mail hasn't been opened yet by Steve.
5) People don't use this road very often.
This road isn't used very often by people.