Read these sentences and fill in the gaps with the correct verb form in the past continuous.

Example 0. John Это поле нужно было оставить пустым (to feed) his rabbits the whole evening.

Answer 0. was feeding

1. Mary was cooking  (cook) a salad at \(7\) o’clock yesterday.

2. It was snowing  (snow) at \(7\) p. m. yesterday.

3. Mary was studying  (study) English the whole evening.