Some athletes take drugs to improve their performance.
Studies suggest that regular intake of the vitamin significantly improves brain function.
My quality of life has improved tremendously since I moved to the country.
Compare some recent work with your older stuff and you'll see how much you've improved.
Several works aimed at improving the "similar words" method by considering the context of the word.
Because of increased use of fertiliser, improved seeds and crop protection measures, crop yields have increased - sometimes greatly.
Cooperating teachers and university supervising teachers' communication with student teachers can be improved.
