1. I took his book from him when he was not paying attention.2. Love comes when you least expect it.3. The Bible says that God's kingdom will manifest itself on Earth when we least expect it.
 when somebody least expects it when somebody is not paying attention
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 risng sea levels.