I can't walk very fast. You are younger; you can walk [fast / the fastest / much faster*] .
Her illness was [the most serious / far more serious* / not as serious] than we at first had thought.
I don't know much but he knows [even little / even less* / less] than I do.
I want you to read [next / the nearest / the next*] passage of the text.
Let's not go by train. Going by bus is [cheap / the most cheap / a lot cheaper*] .
The dog started to run. It ran [the faster and the faster / the fastest / faster and faster*] and soon disappeared in the distance.
This building is very high. Actually it's [the highest* / more higher / higher] building in the town.
This dress is [a bit less* / the least / not so] expensive than that one.
Peter, you are [as lazy as / even lazier* / more lazier] than I thought you to be.
"This is [the most dangerous* / so dangerous / more dangerous] place to cross the street in," the policeman warned us.
The traffic is [the heaviest / heavier* / heavy] downtown than on this road, especially during rush hours.
My elder brother is three years [older* / elder / the oldest] than I.
I like skiing [as much* / as more / more] as skating.
Richard got [few / less / fewer*] good marks than Fred in the examinations.
The more you know [more / the most / the more*] you forget. So why study?