Fill in the gaps with the so or such
1)His speech was.........brilliant that a left extremelly proud of him.
2)the box was.......heavy that I couldn t lift it/
3)it was....a good book that I couldn t put it down/

1)His speech was so brilliant that a left extremely proud of him.

2)the box was so heavy that I couldn't lift it

3)it was such a good book that I couldn't put it down