Think of a test or exam you`ve taken some time ago and describe it. use the words from the list. write 4-5 sentences.
use: difficult, tired, happy, important, nervous, helpful, friendly, clear

Its very important to pass exam well, every person feel a bit nervous about it. 
First of all its difficult to learn all the information that u need to pass. And after this u fell tired, but not forget to be friendly and helpful with ur classmates and friends, cuz its clear that we always need to have a happy mood.