(to go) to the museum, I (to see) a big crowd of people in the street. 11. They (to play) in the yard in the evening yesterday. 12. They (to play) in the yard the whole evening yesterday. 13. I (to clean) my teeth at eight o'clock in the morning yesterday. 14. We (to go) to the wood in summer. 15. When the teacher (to open) the door of the classroom, the pupils (to sit) at their desks. 16. He (to get) up at seven o'clock yesterday. 17. Father (to come) home at six o'clock yesterday. 18.1 (to read) a book at six o'clock yesterday. 19. She (to fall) asleep at eleven o'clock yesterday. 20. Mother (to drink) tea at eleven o'clock yesterday.

Решение:

Здесь нужно поставить глаголы в Past Simple, так как все действия происходили вчера (yesterday). Однако, в предложении 14 действие происходит летом (in summer), что не указывает на конкретное время в прошлом, и поэтому глагол остаётся в инфинитиве.

• 1. (to go) to the museum, I saw a big crowd of people in the street.
• 11. They played in the yard in the evening yesterday.
• 12. They played in the yard the whole evening yesterday.
• 13. I cleaned my teeth at eight o'clock in the morning yesterday.
• 14. We (to go) to the wood in summer.
• 15. When the teacher opened the door of the classroom, the pupils sat at their desks.
• 16. He got up at seven o'clock yesterday.
• 17. Father came home at six o'clock yesterday.
• 18.1 (to read) a book at six o'clock yesterday.
• 19. She fell asleep at eleven o'clock yesterday.
• 20. Mother drank tea at eleven o'clock yesterday.

Ответ:

• 1. saw
• 11. played
• 12. played
• 13. cleaned
• 14. to go
• 15. opened, sat
• 16. got
• 17. came
• 18.1 to read
• 19. fell
• 20. drank