Make a sentence (happy)
The cat is the happiest.
Make a sentence (fast)
The plane is the fastest.
Make a sentence (ugly)
The first picture is the ugliest.
Make a sentence (big)
The lion is the biggest animal.
Make a sentence (dangerous)
The lion is the most dangerous animal.
Make a sentence (important)
Homework is the most important of all.
Make a sentence (old)
The old lady/grandma is the oldest.
Make a sentence (young)
The baby is the youngest.
Make a sentence (stylish)
The second shirt is the most stylish.