Question:
The floor could not withstand the cat's scratches, but the wall was unscathed, since the 

Answer:
Continue the sentence -- wall was impervious to them.


Question:
Brian wrote a best selling story about Brett because 

Answer:
Continue the sentence -- Brian was a great book author.


Question:
Neil was more accomplished at singing than Donald because 

Answer:
Continue the sentence -- Donald lacked confidence on stage and was shy.


Question:
Mary had shorter hair than Sarah because 

Answer:
Continue the sentence -- Sarah got their hair cut far less often.