Question

which sentence is correct? hint: \all ready\ means completely ready; \already\ means previously started or done.
marcus is all ready to run the race.
marcus all ready ran the race.
marcus has all ready run the race.

Explanation:

The first sentence "Marcus is all ready to run the race" is correct. "All ready" means completely ready, which fits the context of being prepared to run the race. The second sentence "Marcus all ready ran the race" and the third sentence "Marcus has all ready run the race" are incorrect because in these cases, the action of running the race has already happened (as indicated by "ran" and "has...run"), so the correct word should be "already" (meaning previously started or done), not "all ready".

Answer:

Marcus is all ready to run the race.