[Q]: How does the sentence end?

I wish that I had enough money to buy a new house, but I don't because the 

[A]: house is too expensive.


[Q]: How does the sentence end?

Tanya had to go to the orientation today unlike Maria, because 

[A]: Maria started the job last year.


[Q]: How does the sentence end?

The doctor told Joseph they were overweight while Donald was in perfect health, so 

[A]:
Joseph immediately went on a diet.