5 типов предложений my brother will leave this town in a week

My brother will leave this town in a week. 

1. Will my brother leave this town in a week?

2. My brother will leave this town in a week, won\'t he?

3. Will my brother leave this town in a week or in a month?

4. Who will leave this town in a week?

5. When will my brother leave this town?