Решение:
- 1. The original sentence is an interrogative sentence in the simple present tense: "Does she cook dinner every night?"
- 2. To convert it to the passive voice, we make the object ("dinner") the subject.
- 3. The auxiliary verb "does" changes to the appropriate form of "to be" (is/am/are) based on the new subject. "Dinner" is singular, so we use "is".
- 4. The past participle of "cook" is "cooked".
- 5. The question structure is maintained: "Is dinner cooked...?"
- 6. The adverbial phrase "every night" remains. The agent "by her" can be added.
- 7. Therefore, the passive form is: "Is dinner cooked by her every night?" or "Is dinner cooked every night?"
Ответ: Is dinner cooked (by her) every night?