Complete the sentences with the correct form of the verb in brackets.
1. I (to know) him for ten years.
2. The accident (to happen) while Kate (to walk) to school.
3. The train (to arrive) soon.
4. They (to move) to America in 2010 and they (to live) there now.
5. At the moment I (to study) for exams. I already (to do) four exams and I (to do) three more next week. It's hard work and I (to be) very happy when I (to finish).