Problem: How does the sentence end?

We left a statue at the grave instead of a plant since the 
Answer: statue would stand up to the weather.

Problem: How does the sentence end?

Christopher wanted to discourage Brian to volunteer with wetland protection agency, 
Answer: Brian is concerned with saving the planet.

Problem: How does the sentence end?

Donald listened  to Kevin's instructions because 
Answer: Kevin was a teacher of the school's cooking club.

Problem: How does the sentence end?

Since Kayla had an interest in biotechnology, her school counselor Emily recommended she major in biology in college. 
Answer:
Emily recommended several colleges with good biology programs.