A. I had already left when she arrived.
B. I left when she arrived.
C. I am leaving now.
D. I will leave later.
Answer: I had already left when she arrived.
A. I had already left when she arrived.
B. I left when she arrived.
C. I am leaving now.
D. I will leave later.
Answer: I had already left when she arrived.
Additional Information: The past perfect tense indicates an action that was completed before another past action.
Subjects: Verbs, Parts of Speech