Here are the completed sentences that match the meanings of the first sentences:

1. **I’ve never had to wait this long for a bus before.**
This is **the longest I’ve ever waited for a bus.**

2. **Remember to take note of what the tour guide said.**
**Make sure you remember what the tour guide said.**

3. **It took us more than 3 hours to discover the inner Hanoi.**
We **spent more than 3 hours discovering the inner Hanoi.**

4. **No other book is more popular than Dickens' "David Copperfield."**
Dickens' "David Copperfield" is **the most popular book.**

5. **Why don’t you consider our suggestion before making an official decision?**
**Don’t you think you should consider our suggestion before making an official decision?**

6. **Watching TV is not as important as doing homework.**
**Doing homework is more important than watching TV.**

7. **My friend plays piano brilliantly.**
**My friend is a brilliant piano player.**

8. **I find most of the young men of my own age so boring.**
**I feel that most young men of my age are boring.**

Feel free to ask more if you need further assistance!