Choose the correct tense form from the given options. I had finished my…

Correct answer: Past Perfect.

'Had finished' shows an action completed before another past action (the friend 'came'). This follows the Past Perfect structure: had + past participle.

• Structure: had + past participle (for example, had finished).

• Why it fits: it expresses a completed action that occurred before another past event (finished before came).

Why the other choices are incorrect:

• Past Indefinite (simple past): would be a form like "finished" without "had." It does not show that one past action was completed before another.

• Past Continuous: would be "was finishing," indicating an action ongoing in the past, not a completed action prior to another event.

• Past Perfect Continuous: would be "had been finishing," emphasizing duration up to a past point. The sentence uses a completed action "had finished," so this continuous form is not appropriate.