Jawaban:

1. The red pencil is shorter than the blue pencil.

2. The blue pencil is longer than the red pencil.

3. The green pencil is the longest pencil.

Penjelasan:

Comparative adjectives is usually use for comparing 2 objects or subjects, for examples:

1. Rina is taller than Rico.

2. Dani is smarter than Tina.

4. The view of mounth Bromo is more beautiful than mounth Merapi.

Superlative adjectives is usually use for telling the people, that the object or the subject is the one that different from the others, for examples:

1. Tiara is the smartest student in our class.

2. Some of the people said that math is that hardest subject in their school.

3. Elon musk is one of the richest person in the world.

(Sorry, if it's wrong)