A2
to get better or to make something better
Dictionary examples:
To improve his English, he talked to his cat all day. (0.0)
To improve his grades, he slept with his books under his pillow. (0.0)
My cooking improved after I stopped burning water. (0.0)
Her health has improved. (9.5)
I thought the best way to improve my French was to live in France. (16.2)