1. If I could do my life (all) over (again), I would have made better use of time.2. If I could live my life over, I would have married you.
要是我能夠再活一次 = If I could do my life (all) over (again) 或 If I could live my life over
這是一個連環問題: 燃燒石油導致二氧化碳增加，二氧化碳增加導致溫室效應，溫室效應導致冰層融化、海平面上升。 (請填空)
This is a chain of problems. Burning oil leads to increase in carbon dioxide, which leads to the greenhouse effect, which leads to melting of glaciers, which leads to rising sea leves.