[Q]: How does the sentence end?

Brian could swim a lot faster than Michael because 

[A]: Michael never practiced during the week.


[Q]: How does the sentence end?

Brett was able to act in a more proper way during social occasions than Joseph because 

[A]: Joseph was unfamiliar with the rules of etiquette.


[Q]: How does the sentence end?

Ian doesn't like the rotten tree stump in Hunter's yard, so 

[A]:
Ian asks him to grind down the stump.