They had spent hours building it together.

Meaning: They had used many hours to make the sandcastle with each other.

Choice of Words: The word spent means to use or pass (time). Hours are periods of time equal to 60 minutes. Building means to make or construct something. It refers to the sandcastle. Together means with each other.

Alternative Expressions

Related Expressions

• He spent hours exploring the secret room and its treasures.
• She spent hours lost in the world of books.
• She spent hours practicing her technique.
• We spent hours lost in the world of books.
• He spent hours practicing his skills every day.
• He spent many hours observing the planet.
• She spent hours poring over the book.
• I spent hours enjoying the beauty of the garden.
• They spent the afternoon playing together.
• They cherish time spent together.