I really think he's a dimwit.

The summer vacation ended in the blink of an eye.

The train will arrive soon.

He likes to take a walk in the park at dusk.

The Cultural Revolution is a part of China's history.

When he had a problem due to his own actions, he remembered the phrase 'chickens come home to roost'.

Interracial marriage promotes diversity and understanding.

Intermolecular forces are an important factor in determining the properties of a substance.

He is doing special exercises to strengthen the interosseous muscles of his hand.

The mesentery plays a role in supporting the intestines.