Help them get over their shy nature, throw ideas and let them finish the idea, they'll the rest of the group to slow down and start including your friend
Explanation:
The basic form for a book citation is: Last Name, First Name. Title of Book.
The italicized word is <em>extremely </em>and the correct answer is intensive.
The word extremely is an adverb, which means that you can rule out <em>noun, adjective, </em>and <em>verb </em>immediately. You can also rule out <em>empty word </em>because <em>extremely </em>has a particular meaning on its own, which means that it cannot be empty. Thus, we are left with one option only - <em />intensive.
Found this on http://www.shakespeareswords.com/