Помогите перевести в Past Perfect.

1. Я поужинал до девяти часов.

2. Он не выучил стихотворение до вечера.

3. Они развели костёр до заката солнца.

4. Дежурный вытер доску до прихода учителя.

5. Я не перевёл статью до вечера.

1. I had had dinner before nine o'clock.

2. He had not learned the poem by the evening.

3. They had built a fire before sunset.

4. The pupil on duty had wiped the board before the teacher came in.

5. I had not translated the article before the evening.