[Q]: How does the sentence end?

The infant smiled more when offered breastmilk than formula because the 

[A]: formula made them sick.


[Q]: How does the sentence end?

they replaced the silicon material to cotton for baby clothes , the 

[A]: cotton is warm.


[Q]: How does the sentence end?

Sarah started the car and then drove to pick of Jessica, because 

[A]:
Sarah was providing a ride.