Вопросы к предложению : the letter is sent to you by airmail to Moscow every summer.(общий вопрос,специальные(ко всему),

1. Is the letter sent to you by airmail to Moscow every summer?

2. Is the letter sent to you by airmail to Moscow every summer or every fall?

3. What is sent to you by airmail to Moscow every summer?

4. Whom is the letter sent by airmail to Moscow every summer to?

5. How is the letter sent to you to Moscow every summer?

6. Where is the letter sent by airmail every summer?

7. When is the letter sent to you by airmail to Moscow?

8. The letter is sent to you by airmail to Moscow every summer, isn\'t it?