The content of the letter wrote : " Congratulations, Mary. You have successfully qualified our first qualifier. The next round of the competition will take place on June 27 in the A hall. You should have the most complete preparation for the competiton. Good luck and see you at the competition".Lan looked at the letter and remembered the first round

The first round of the competition took place 1 month ago.This is a running competition. Each contestant will have to run 800 met in five minutes. The next winner are those who complete the test on time and are given in order from high to low. 15 people will be to the next round. Mary is one of those 15 people. After that she gave the letter from the contest organizer.