Ex.7 put the verb "to be" into the appropriate tense form: 1. last year in form 10. 2. dima's best friend. nika dima's cousin? 4. the boys .. frequenters of "orbita" bin 5. next year a first-year student. first 7. in 5 years my 40. 8. you at the club yesterday? 9. going to enter the baikal university. 10. you . not a student