Finish each of the following sentences so that its meaning stays the same

 Finish each of the following sentences so that its meaning stays the same.
1. The last time I went to Ho Chi Minh City was ten years ago.
→ It has been _______________________________________________________
2. This is the most interesting novel I have ever read.
→ I have ___________________________________________________________
3. This is the first time I have been to Bangkok.
→ I haven't _________________________________________________________
4. I started learning English 10 years ago
→ I have ___________________________________________________________
5. It has been ages since I last saw him.
→ I have ___________________________________________________________