1. This is THE BIGGEST building in our city.
2. She is THE STRONGEST person we have ever met.
3. The road becomes NARROWER after some miles.
4. Peter is THE OLDESTof them all.
5. Ann was a bit MORE CHEERFUL than she usually is.
6. Going by train takes twice LONGER going by plain.
7. He thinks English spelling is MORE DIFFICULT than Russian.
8. This test was THE EASIEST of all.
9. She works HARDER than her sisters.