Mother: I left two pieces of cake in the cupboard this morning, Johnny, and now there is only one piece left. Can you explain that?
妈妈:约翰尼,我今天早上在橱子里放了两块点心。现在就剩下一块了。你能解释一下吗?

Johnny: Well, I suppose it was so dark that I didn’t notice the other.
约翰尼:嗯,我想是因为里面太黑我没看到另外那块。