[Q]: How does the sentence end?

The man in detox had to choose between puking on the floor or in the toilet. Luckily, he did it in 
OPTIONS:
- toilet .
- floor .

[A]: toilet .
QUES: Continue writing.

It was nice to see Sarah share everything compared to Jennifer, by reason that 

OPTIONS:
- Sarah was generous.
- Jennifer was generous.
+++++++++
ANS: Sarah was generous.
Problem: How does the sentence end?

Having a relationship is hard work but I prefer that I receive letters rather than gifts since the 
OPTIONS:
- letters are manufactured.
- gifts are manufactured.
Answer: gifts are manufactured.
sentence: Kelly decided to fertilize the lilies with coffee instead of compost because the  OPTIONS:
- coffee is less acidic and lilies thrive in acidic conditions.
- compost is less acidic and lilies thrive in acidic conditions.
complete: compost is less acidic and lilies thrive in acidic conditions.
Lawrence has become very withdrawn and solitary. Donald, on the other hand, has become aggressive and disruptive. While both changes indicate emotional problems, 
OPTIONS:
- Lawrence has internalized his.
- Donald has internalized his.
Lawrence has internalized his.
Problem: Continue the following story.

Aaron went to pick up Michael, who needed a ride to the airport, and 
OPTIONS:
- Aaron was very grateful.
- Michael was very grateful.
Here's how I want to continue it:
Michael was very grateful.