A day has 24 hours.

He is an expert in entomology, especially knowledgeable about butterflies.

Insects are an important part of the natural world.

He is world-famous as an entomologist.

He ate one apple.

It is important for each person to fulfill their role.

He acted according to my instructions one by one.

Various species of trees are planted in this park.

He obtained a third-class driver's license.

My favorite dog breed is the Siberian Husky.