You know the feeling.We all asked ourselves that unhappy quetion"where on earth did I leave my keys?"Now a team of japanese scientists say that they have come up with the answer.

You know the feeling.We all asked ourselves that unhappy quetion"where on earth did I leave my keys?"Now a team of japanese scientists say that they have come up with the answer.
You know the feeling.We all asked ourselves that unhappy quetion
"where on earth did I leave my keys?"
Now a team of japanese scientists say that they have come up with the answer.

You know the feeling.We all asked ourselves that unhappy quetion"where on earth did I leave my keys?"Now a team of japanese scientists say that they have come up with the answer.
1.你知道这种感觉.我们都问自己那个不愉快的问题.
2.我究竟把钥匙忘在哪里了?
3.现在一队日本科学家声称他们想出了答案.