[Q]: How does the sentence end?

I wrote drafts of my article on notepad while out and computer while at home. The 
OPTIONS:
- computer crashed so at least I had a backup.
- notepad crashed so at least I had a backup.

[A]: computer crashed so at least I had a backup.
QUES: Continue writing.

Donald taught Eric how to do the moonwalk because 

OPTIONS:
- Donald was an expert at the dance academy.
- Eric was an expert at the dance academy.
+++++++++
ANS: Donald was an expert at the dance academy.
Problem: How does the sentence end?

The blood went from the tube and was put into the needle, making the 
OPTIONS:
- needle heavier.
- tube heavier.
Answer: needle heavier.
sentence: Kayla had flown all around the world whereas Tanya sailed everywhere.  OPTIONS:
- Kayla loved air travel.
- Tanya loved air travel.
complete: Kayla loved air travel.
Betty greatly embarrassed themselves in front of Christine. 
OPTIONS:
- Betty hence felt the need to apologise.
- Christine hence felt the need to apologise.
Betty hence felt the need to apologise.
Problem: Continue the following story.

Adam gave Steven a work suspension of three days for failing to complete the job because 
OPTIONS:
- Adam was the boss.
- Steven was the boss.
Here's how I want to continue it:
Adam was the boss.