Strong - stronger - the strongest
short - shorter - the shortest
wide - wider - the widest
low - lower - the lowest
busy - busier - the busiest
necessary - more necessary - the most nexessary
quickly - quicker - quickest
interesting - more interesting - the most interesting
comfortable - more comfortable - the most comfortable
popular - more popular - the most popular
active - more active - the most active
pleasant - more pleasant - the mpst pleasant
beatiful - more beautiful - the most beautiful
clearly - more clearly - the most clearly