[Q]: How does the sentence end?

Kevin confidently told Jason that his engraving business was going to make him rich.  
OPTIONS:
- Kevin was bold.
- Jason was bold.

[A]: Kevin was bold.
QUES: Continue writing.

Maria enjoyed her collections but her favorite was her dolls and her least favorite was stamps because the 

OPTIONS:
- dolls were hard to find.
- stamps were hard to find.
+++++++++
ANS: stamps were hard to find.
Problem: How does the sentence end?

Brett pointed out and read the multimeter to Jason because 
OPTIONS:
- Brett found numbers very exciting.
- Jason found numbers very exciting.
Answer: Brett found numbers very exciting.
sentence: Monica bit their finger nail all the time but not Erin because  OPTIONS:
- Monica had a calm disposition.
- Erin had a calm disposition.
complete: Erin had a calm disposition.
The mountain bike will not fit on the trailer because the 
OPTIONS:
- mountain bike is too slender.
- trailer is too slender.
trailer is too slender.
Problem: Continue the following story.

He wanted to put the multivitamin in the patient's mouth to swallow it but the 
OPTIONS:
- multivitamin was too small.
- mouth was too small.
Here's how I want to continue it:
mouth was too small.