Use the verb "to be" either in present simple or in past simple. 1. they 10 today. 2. where john. i want to see him. 3. ben 7 yesterday. 4. where you last month? 5. sam not in london now. 6. fred in the park last week. 7. we at home today. 8. who at school yesterday? 9. bob and i singing now. 10. with whom your sister at the zoo last week?