—Math is too difficult. I want to give it up. —Please don’t. Nothing is _________if you put your heart into it.

— Are two students enough to help you carry the desk?— No, the desk is too heavy. I need ______ two.

We get _______ sometimes when we study in a group. But we can learn from each other in this way. 

Lucy is10 years old. He is ______to go to school.

He was _____at the news and looked at me with his mouth _____.