A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main event. It talks about fireworks and special effects that will happen. This is a broad overview of what will take place. It does not refer to any previous information. Why other lines are not chosen? Paragraph 2 starts with a quote, which makes it dependent on previous context. Paragraph 3 uses 'From 8:40 pm', which suggests a specific time and needs context. Paragraph 4 starts with a quote too, making it dependent.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it wraps up the events. It talks about the fireworks display, which is the final part of the celebration. It gives a clear conclusion to the sequence of events.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects with Paragraph 1 because it explains the meaning behind the event. The quote from Rhoda Roberts gives a personal touch to the fireworks and special effects mentioned in Paragraph 1. This shows a logical order from the event to its emotional impact.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 follows Paragraph 2 because it gives a specific time for the event mentioned in Paragraph 2. It shows the action that will happen after the emotional context is set. This is a logical order from feelings to actions.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects with Paragraph 3 because it continues the action of the bridge being transformed. It adds more details about the fireworks and special effects that will happen after the ceremony. This shows a clear progression of events.