是What a useful advice还是What an useful advice还是What useful advice?请高手告诉我，并且告诉我理由 _________useful advice it is ?...

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What useful advice\uff01


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What useful advice advice是不可数名词

What useful advice!

What useful advice?

advice是不可数名词,不能加冠词

扩展阅读：what a great fun ... uptown funk ... what a useful book ... im looking forward to ... what useful advice ... around the corner ... what the fack ... future funk ... what a great museum ...