Анонимно

17. Mother ... dinner by 2 o`clock yesterday.

a. had cooked
b. cooks
c. will cooked
d. cooking

Ответ

Анонимно
Прошедшее время, а).
17. Mother had cooked dinner by 2 0'clock yesterday.

Ответ

Анонимно
Mother had cooked dinner by 2 o'clock yesterday