用方框内所给单词的适当形式填空，每词限用一次。

success  difficult   convenient  stand   nine

Mr. Black lives in the centre of the city, it’s very _____.
Mary likes to walk to the _____floor every day. It’s good for her health.
Only practice can make you a ______ person
Some students don’t know how to face the heated competition. We have to beat the________.
When I looked up, I saw my best friends and teammates______ there and cheering for me, with their eyes filled with care and encouragement.