1. I know about the surprise party you guys are throwing me today. Jerry let it slip earlier today.2. She let (it) slip that she's still in love with her ex husband.3. I am sorry your secret slipped out when I was talking to your wife.4. He blurted out the hiding place of the suspect.
 let (it) slip slip out blurt out這些用法都指不小心說出某些事情，也就是說溜嘴的意思
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 meltng of glaciers, which leads to rising sea levels.