hey, licheng, i had the same confusion be4 (and really frustrated). the sequence of keys to some tests is not in order. doublecheck how many questions in the section and try to find the key with the same number of questions. But i think the keys to the first test are right.
\"Our lives are a combination of good and bad, positive and negative.When we focus on the good that is already present, we feel better. If not, we don\'t. Either way, life goes on.\"
-- Peter McWilliams
