Раскройте скобки и поставьте глаголы в правильную форму: 1. Не (tc call) the British firm from 10 till 11 o'clock tomorrow.

1. Не will be calling (Future Progressive) the British firm from 10 till 11 o\'clock tomorrow. 2. My secretary lost the keys when he was walking (Past Continuous) in the park. 3. When did the Personnel Manager come (Past Indefinite)? — He came (Past Indefinite) 10 minutes ago. 4. Our Export Manager had been learning (Past Perfect Continuous) English before he entered the University.