Ex.7 Put the verb "to be" into the appropriate tense form:
1. Last year I.... in form 10.
2. Alex.... Dima's best friend.
3.... Nika Dima's cousin?
4. The boys .. . frequenters of "Orbita" bin
5. Next year she.... a first-year student. first
7. In 5 years my Dad... 40.
8. ..... you at the club yesterday?
9. They.... going to enter the Baikal university.
10. You . ... not a student yet,...