составить 4 предложения в Past Perfect и 4 предложения в Past Perfect continuous

Вот примеры предложений в Past Perfect:

1. She had already left the office when I arrived.

2. By the time the meeting started, they had finished their work.

3. They had visited the museum before they went to the park.

4. He had never seen such a beautiful sunset before that day.

А вот примеры предложений в Past Perfect Continuous:

1. I had been waiting for hours when the bus finally arrived.

2. She had been studying all night before the exam.

3. They had been traveling for a month before they returned home.

4. He had been working on the project for weeks when he finally completed it.