Problem: How does the sentence end?

Samantha stopped smoking for the sake of Maria, because 
OPTIONS:
- Samantha wanted them to stop worrying.
- Maria wanted them to stop worrying.
Answer: Samantha wanted them to stop worrying.
sentence: Nick knew the answers in advance, while Benjamin did not, because  OPTIONS:
- Nick had lost their textbook.
- Benjamin had lost their textbook.
complete: Benjamin had lost their textbook.
When Betty wanted to organize her closet, instead of keeping things in cardboard boxes, she used plastic totes. The 
OPTIONS:
- cardboard boxes would last for a long time.
- plastic totes would last for a long time.
plastic totes would last for a long time.
Input: Continue writing.

The blender was always used by the winning chef, while the loser used the mixer, because the 
OPTIONS:
- mixer had sharp blades.
- blender had sharp blades.

Continued: blender had sharp blades.
Story needs to be completed:
He put the dollar bill in the drawer instead of his pocket, because the 
OPTIONS:
- drawer was the least expected hiding spot.
- pocket was the least expected hiding spot.

My choice:
drawer was the least expected hiding spot.
Problem: How does the sentence end?

Leslie blocked Nelson from seeing what the teacher wrote on the board and 
OPTIONS:
- Leslie is upset.
- Nelson is upset.
Answer:
Nelson is upset.