[Q]: How does the sentence end?

She ordered the slate to replace the wood on the patio because the 

[A]: wood was more worn.


[Q]: How does the sentence end?

Bob liked to treat his dandruff with professional treatments instead of shampoo, because the 

[A]: treatments worked well.


[Q]: How does the sentence end?

Dennis could build a house on their own but not Derrick because 

[A]:
Derrick had a lack of construction knowledge.