Choose the best option to transform into a 'Complex' sentence
He is too weak to walk, he will need a wheelchair.
1
He is so weak that he cannot walk by himself, he will need a wheelchair
2
He is so weak that he can walk by himself, he will need a wheelchair
3
He is so weak that he cannot walk by himself, he will not need a wheelchair
4
He is so weak that he can walk by himself, he will not need a wheelchair