Will he? Won't he? Roger Federer has cast an element of doubt over whether he will compete in the tennis season's second grand slam -- next month's French Open.
원문출처 : http://www.cnn.com/2017/04/17/tennis/roger-federer-french-open/index.html
원문출처 : http://www.cnn.com/2017/04/17/tennis/roger-federer-french-open/index.html