Раскройте скобки, употребляя глаголы в Present Continuous, Past Continuous, Future Continuous Tenses. 1. I (to write)

1. I am writing (Present Continuous) a letter to my granny now. 2. My sister was swimming (Past Continuous) in the pool from 5 till 6 o\'clock yesterday. 3. My friends will be skiing (Future Continuous) in the Caucasus next weekend. 4. She is still typing (Present Continuous) her article. 5. They are still drinking (Present Continuous) tea in the canteen.