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?Johnny: Well, I suppose it was so dark that I didn’t notice the other.

媽媽：約翰尼，我今天早上在櫥子里放了兩塊點(diǎn)心。現(xiàn)在就剩下一塊了。你能解釋一下嗎？約翰尼：嗯，我想是因?yàn)槔锩嫣谖覜](méi)看到另外那塊。