Problem: How does the sentence end?

Natalie was less prepared for the talent show than Kayla because 
Answer: Kayla studied very hard.

Problem: How does the sentence end?

Cynthia was having serious regrets about a break-up and asked Christine for support because 
Answer: Cynthia had never been through one.

Problem: How does the sentence end?

Jessica quietly told Tanya that she is deeply in debt and can't pay it back..  
Answer: Tanya was surprised.

Problem: How does the sentence end?

Since the man's heart was feeling well, between exercise and rest, he chose the 
Answer:
exercise .