How to say I don't know in English?
How to say I don't know ("ich weiß nicht") in German?
How to say I don't know ("je ne sais pas") in French?
How to say I don't know ("no sé") in Spanish?
How to say I don't know ("わからない") in Japanese?
How to say I don't know ("non lo so") in Italian?
How to say I don't know ("我不知道") in Chinese?