ALL READY: prepared
Example: Her luggage was all ready when the taxi arrived.
ALREADY: by this time
Example: Annie was already in her seat when the school bell rang.
Example: Mark isn’t altogether trustworthy around chocolate.
ALL TOGETHER: gathered, with everything in one place
Example: We were all together at the party.
APART: to be separated
Example: The cubicles kept the employees apart.
A PART: to be joined with
Example: A part of the project involves assigning tasks to each member of the team.
Example: The ascent to the mountain overlook took two hours.
Example: The patient assented to undergo the experimental treatment.