Answer:
Dear cousin, thank you very much for inviting me to your birthday party next Saturday. From now on I want to assure you that I will be there to celebrate with you, just as you wanted me to. Also, I will bring a great gift so you know how much I appreciate you and what you mean to the family. I send you a big hug, your favorite cousin.
For short answer skip the ones you don't know and then go back to them at the end. Write the essays first so you don't run out of time. If you don't know the material fully just put down what you do know and then reword it a few ways to make your essay longer. Also, look for clues in the other test questions that could give you information on either responses. Hope that helped!
Say the same decrease increase approach the rail rate