Choose the right variant. 1. He …20 last year. a) is b) was c) are 2. I don’t think English is … than German or French.

1. He was 20 last year.
2. I don’t think English is more difficult than German or French.
3. Citizens must observe the laws of their country. 
4. I like my future profession because it is interesting and socially important. 
5. The students of our University take exams twice a year. 
6. I am writing a test at the moment. 
7. They have discussed this problem already. 
8. Many crimes are prevented by effective law enforcement.
9. The witness is being interviewed by the investigator now.
10. The crime was committed yesterday.