There are four people in A. B, and D. Each person can only speak two of the four languages: English, French, German, and Chinese. There is no one language that everyone can speak, but one language that three people can speak. In addition, A cannot speak French, but when C needs him as a translator when communicating. B can speak Chinese, although D can't understand, but they can communicate. No one can speak all three languages. No one knows both German and Chinese. Based on this, it can be inferred that the languages of the three people are:. ['English.', 'French.', 'German.', 'Chinese.']