Question

Riad is very industrious boy (exclamatory)

Answer 1

So I'm not quite sure what you're trying to ask, but I'm assuming you need to make the given sentence an exclamatory one?

If so, here's the answer: Riad is a very industrious boy!

Answer 2

Answer:

“What an industrious boy is Raid!”

Explanation:

An exclamatory sentence often expresses a strong emotion toward something or someone. An exclamatory sentence usually follows the following structure:

• Exclamatory sentences commonly begin with an exclamatory pronoun like "what" or "how"; for example, "How well do you understand it all!"
• Exclamatory sentences might use interjections like "wow" and "oh"; for example, "Wow! that is a lovely dress."
• Exclamatory sentences often end with an exclamation mark; for example, "What a well-disciplined dog!"

This is how an exclamatory sentence is identified.