题目

Since every Saturday is cleaning day, I thought I'd use this moment to teach my kids housework.On our first cleaning day, Sebastian started with good__________. He took a cloth to the kitchen but soon got__________by our biggest knife. I got to stop him before he__________himself. Sebastian is only seven.Tashi, who's sixteen, came out of her bedroom at noon. I told Tashi sweeping was her__________. Fine, she said, and she went to the bathroom. Forty minutes passed before she finished a really__________area.How can my kids be so__________ at cleaning?Of course, I knew. For sixteen years, Tashi'计算：（2+π）0+2-2-（12）-1+|-2|