32. My sister (not play) the piano at four o'clock yesterday. She (play) the piano the whole evening.

32. My sister wasn't playing the piano at four o'clock yesterday. She was playing the piano the whole evening.

В первой части предложения необходимо использовать Past Continuous в отрицательной форме, так как действие не происходило в определенное время вчера (at four o'clock yesterday). Во второй части необходимо использовать Past Continuous, так как действие происходило в течение всего вечера (the whole evening).

Ответ: My sister wasn't playing the piano at four o'clock yesterday. She was playing the piano the whole evening.