[Q]: How does the sentence end?

Billy replaced the plastic water cup with a glass one so he could see what he was drinking, the 

[A]: glass was clear.


[Q]: How does the sentence end?

The couple of people were trying to send messages instead of writing out letters, since the 

[A]: letters were longer.


[Q]: How does the sentence end?

Victoria was able to drink milk unlike Elena, by reason that 

[A]:
Elena was very allergic to dairy.