Ответ:

1) Why did you choose this profession?

2) Did he pass his exam last week?

3) How did you get acquainted with your boyfriend?

4) How did you break your leg?

5) Did you call Marina yesterday?

Объяснение:

в специальных вопросах первыми идут слова: how, what, why и т.д. а потом идет вспомогательный глагол (в этом случае did)

Ответ:

1. Why did you choose this profession?

2. Did he pass his exam last week?

3. Did you acquainted  how to get your boyfriend?

4. How did you breack your leg?

5. Did you call Marina yesterday?