It's difficult to write an essay on this topic.

What does this sentence mean?

Would you like to observe the stars at the observatory tonight?

There are five questions on the test.

His calligraphy theme expresses the beauty of nature.

She was thinking with her hand on her forehead.

He is an expert in law.

He asked me three questions.

He threw a difficult question at me.

Her dress was a vivid lemon color, and it stood out.