A Good Friend

"I'm sorry, Eric. I can't go. I have a test tomorrow."(p. 5)

Yoko and Eric are friend. One day, Eric invites Yoko to go to the beach. Yoko really wants to go there, but her mother doesn't allow her to go there and Yoko has a test next day. What does she? Can she overcome she desire?

I have experience the thing like Yoko. When I am invited to go somewhere by family or my friends in spite of I should study for a test, I always say "I can't go". But I actually tend to neglect studying a little... I have to study same amount everyday.