I was late, as I had to (unsafe/unhitch/rethink) the horse and unload the cart before I go to school.
Unhitch
The buildings are ageing, and some are (unsafe/rethink/unplug)
Unsafe
I need to (unplug/unsafe/reship) the package because it is incorrect address.
Reship
Please (unsafe/unplug/unhitch) the tv before you go to bed.
Unplug
We need to (rethink/reship/unsafe) the idea.
Rethink
