Kitty and Ben are now at the Science Museum .
They want to see 'The World of Robots' first.
four
He can play the piano very well.
They 're very useful.
Thay're at the Science Museum.
'The World of Robots'.
Three.
He can play the piano.
Useful and interesting.
1、They are at the Science Museum .
2、They want to see'The World of Robots' .
3、They can see two kinds of robots.
4、He can play the piano very well.
5、They are useful.
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