[Q]: How does the sentence end?

Mary preferred to use the toaster to warm her bread and not the microwave because the 

[A]: microwave was broken.


[Q]: How does the sentence end?

The cat dropped the flowerpot from the window and it got broken landing on the floor. The 

[A]: flowerpot is too fragile.


[Q]: How does the sentence end?

Mary was prone to depression while Monica was not, because 

[A]:
Mary was a naturally optimistic person.