Problem: How does the sentence end?

Rebecca was instructing Katrina on how to ski because
Answer: Katrina was a student on the mountain.

Problem: How does the sentence end?

Hunter is new to fishing and wants to learn how to catch a perch so he asks Randy for an advice, because
Answer: Randy is experienced.

Problem: How does the sentence end?

The problem of my sister this year is worse than my situation was last year because the
Answer: situation is fixable.

Problem: How does the sentence end?

Although Kevin went to the store to buy carrots he got potatoes instead because the
Answer:
potatoes were cheap and he was on a budget.