1) The Himalayas are much higher than the Alps.
2) Driving on the motorway is becoming more dangerous every day.
3) China has the largest population in the world.
4) John is happier now than he has ever been.
5) Air Pollution seems to be getting worse every day.
6) Mark lives farther away from school than the other students.
7) Fewer people like living in the city now because the air is cleaner in the countryside.
8) He is the most intelligent person I have ever met.