Choose the words and replace. not to meet, to take, to

Choose the words and replace. not to meet, to take, to improve, come, not to understand I_____from Switzerland.I come to London six months ago to learn English. I_____many English people yet, only my teachers. I started learning English at school in Switzerland when I was eleven. At first in London, I_____anything, but now my English_____and I_____an exam.