13. Look! My cat (to play) with a ball. 14. When I went out into the garden, the sun (to shine) and birds (to sing) in the trees.

Краткое пояснение:

Пошаговое решение:

1. Задание 13: «Look!» — маркер для Present Continuous. Форма глагола: am/is/are + V-ing.
2. Задание 14: «When I went out...» — Past Simple. Действия, происходившие в этот момент (sun shining, birds singing), описываются с помощью Past Continuous. Форма глагола: was/were + V-ing.

Ответ: 13. Look! My cat is playing with a ball. 14. When I went out into the garden, the sun was shining and birds were singing in the trees.