[Q]: How does the sentence end?

Justin was a very discerning shopper, while Michael was willing to settle, so 

[A]: Michael often purchased low quality items.


[Q]: How does the sentence end?

I went to park my boat in the local marina but I couldn't because the 

[A]: marina was too full.


[Q]: How does the sentence end?

Navigation was a weakness for Megan but was Sarah 's strength, so 

[A]:
Sarah could always locate her destination.