sentence: Natalie had been teaching for ten years whereas Victoria just started teaching, so 
complete: Natalie had many different teaching tricks accumulated over the years.

sentence: Maria is a pretty good athlete but Felicia is an elite athlete. 
complete: Maria finished their mile run in 8 minutes.

sentence: When making fruit salad, I like to add more strawberries than blackberries since the 
complete:
blackberries make the dish tarter and I have a big sweet tooth.