1. People did not realize (past simp) the importance of this problem a few years ago.
2. Only by the beginning of the 20th century the actual evidence of the strength of the British labour movement had appeared (past perf) .
3. I think he has achieved (pres perf) great success in his studies.
4. Economic cooperation with foreign countries is gaining (pres cont) a growing
importance now.
5. We shall discuss (fut simp) new aspects of privatization at the
next seminar.
6. The laws of many European countries developed (past simp) on the basis of Roman law.
7. In the modern times most rules of law have reflected (pres perf) general custom.
8. Continental or Roman law has developed (pres perf) in most of Continental Europe, Latin America and many countries in Asia and Africa.