Past Perfect 1 Affirmatives

The correct answer is "had walked" because the sentence is in the past perfect tense, indicating that the action of walking had already been completed before reaching the north pole.

The correct answer is 'd left, had left. This is because the sentence is in the past tense and the word "realized" indicates a past event. The phrase "I had left" is used to indicate that the action of leaving the wallet at home occurred before the realization at the office. The contraction "'d" is a shortened form of "had" in this context.

The correct answer is 'd already seen, had already seen. This is because the sentence is in the past tense and requires the past perfect tense to indicate an action that occurred before another past action. The contraction 'd is short for had, indicating the past perfect tense. Therefore, the correct answer is 'd already seen, had already seen.

The sentence suggests that the speaker had seen the person in question before, but they had never spoken to her until today. The use of "had seen" in the past perfect tense indicates that the action of seeing her occurred before the action of talking to her. This implies that the speaker had some prior knowledge or familiarity with her, but they had not yet had a conversation until now.

The correct answer is "had broken in". This is because the sentence is in the past perfect tense, indicating an action that occurred before another past action. "Had broken in" shows that the breaking in happened before the speaker arrived home.