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.

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？约翰尼：嗯，我想是因为里面太黑我没看到另外那块。

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