Complete the sentences with comparatives form or superlatives form of the adjectives: 1. The London Underground is ________________(old) metro system in the world. 2. Geese are _____________ (fast) small birds. 3. Neil Armstrong is one of _______________ (famous) astronauts in history. 4. My road trip across the USA was ______________(amazing) journey of my life. 5. My journey to work is _____________ (long) your journey to work. 6. Travel by are is ____________ (safe) by road. 7. Who’s the _____________ (good) driver in your family? 8. Fridays and Sundays are _____________ (expensive) days to travel by plane. 9. Learning a language is _________________ (difficult) learning a musical instrument. 10. My car is _____________ (small) car in the street. giúp mình với ạ thank mí bạn?