Exercise 7. put «to be» in present simple, past simple or future simple. the students in the russian museum. 2. last month they in the hermitage. there … an interesting exhibition there. 3. in two weeks they in the tretyakov gallery. they lucky. 4. my father …a teacher. 5. he a pupil twenty years ago. 6. i doctor when i grow up. 7. my sister not at home tomorrow. 8. she at school tomorrow. 9. you at home tomorrow? 10. your father at work yesterday?