Usually, I (work) as a secretary at ABT, but this summer I (study) French at a language school in Paris. That is why I am in Paris.

Usually, I work as a secretary at ABT, but this summer I am studying French at a language school in Paris. That is why I am in Paris. (Обычно я работаю секретарем в ABT, но этим летом я учу французский в языковой школе в Париже. Вот почему я в Париже.)