I/ 1.C 2.D 3.A 4.D 5.A
III/ 1.A 2.B 3.A 4.C 5.B 6.D 7.A 8.B 9.C 10.B
IV: 1.A 2.A 3.D 4.A 5.D
V/ 1. we started learning English 6 years ago
2. She hasn't seen him for years
3. I haven't seen a Hollywood film for ages
4. Mary began working in this company five years ago
VI/ 1.B 2.C 3.A 4.C 5.B