20. Ruth (to learn) English now because she (to like) learning languages and she (to want) to impress everybody.

Ruth is learning English now because she likes learning languages and she wants to impress everybody.

Объяснение: 'Ruth is learning' - Present Continuous, учит сейчас. 'She likes' - Present Simple, что она любит. 'She wants' - Present Simple, что она хочет.