[Q]: How does the sentence end?

Leslie took out a book from the bookshelf and began to read a story to Ian because 

[A]: Ian didn't want to sleep.


[Q]: How does the sentence end?

Matthew is much better at putting makeup on Jason although 

[A]: Jason is a professional makeup artist.


[Q]: How does the sentence end?

Katrina has normal vision, while Christine has been blind their whole life. 

[A]:
Christine 's life has been tougher.