How to say “Training starts in five minutes and the chalkboard is still blank!” in Japanese

In Japanese

訓練(くんれん)まであと五分(ごふん)なのに、黒板(こくばん)はまだ何(なに)も書(か)かれていないじゃないか！

kunren made ato gofun na no ni, kokuban wa mada nani mo kakarete inai janai ka!