Помогите раскрыть скобки, употребляя Future Perfect Continuous.1. Не (to study) in

Помогите раскрыть скобки, употребляя Future Perfect Continuous.

1. Не (to study) in London for two years when I come here.

2. He (to teach) German for two years when I begin to teach English.

3. By next July she (to live) here for five years.

4. At six o'clock I (to work) for five hours.

5. I (to work) at the library for 3 hours when you come there.