猜词坊：根据句意，猜猜下列句子中划线部分的汉语意思是什么.

　　I'm not going to tell you the secret as you have a big mouth.

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　　猜词坊：根据句意，猜猜下列句子中划线部分的汉语意思是什么.

　　Don't ask me. I'm all at sea now.

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　　猜词坊：根据句意，猜猜下列句子中划线部分的汉语意思是什么.

　　You have to wait till the cows come home before Jim pays his debt (还钱).

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　　猜词坊：根据句意，猜猜下列句子中划线部分的汉语意思是什么.

　　Be a good sport and sing us a song.

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　　猜词坊：根据句意，猜猜下列句子中划线部分的汉语意思是什么.

　　You can trust(信任) him because he is a man of his word.

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