Problem: How does the sentence end?

Betty's dog had a lot of aggression but not Rachel's dog because 
OPTIONS:
- Betty had a dog that bit a lot of people.
- Rachel had a dog that bit a lot of people.
Answer: Betty had a dog that bit a lot of people.

Problem: How does the sentence end?

Cleaning a piano is easy to Nick but not Leslie because 
OPTIONS:
- Nick makes it complex by not using a feather duster.
- Leslie makes it complex by not using a feather duster.
Answer: Leslie makes it complex by not using a feather duster.

Problem: How does the sentence end?

We could not greet them at the airport, so we waited in the lot.  The 
OPTIONS:
- airport made it easy to find them.
- lot made it easy to find them.
Answer: lot made it easy to find them.

Problem: How does the sentence end?

The skin did not have the glow as it had so much dirt, it needed cleansing as the 
OPTIONS:
- dirt was too much.
- glow was too much.
Answer:
dirt was too much.