5. My sister (not to play) the piano now. She (to play) the piano in the evening.

Решение:

В данном предложении используются времена Present Continuous и Present Simple.

1. My sister is not playing the piano now. (Present Continuous: действие, которое не происходит прямо сейчас).
2. She plays the piano in the evening. (Present Simple: утверждение о регулярном действии, привычке).

Ответ: My sister is not playing the piano now. She plays the piano in the evening.