她对德语和俄语有实用知识。

She has ___a ___working ___knowledge ___of German and Russian.

我对英语、西班牙语和意大利语有实用知识。

I have ___a ___working ___knowledge ___of English, Spanish, and Italian.

对于这份工作，对会计软件的实用知识是必不可少的。

For this job, a ___working ___knowledge ___of accounting software is essential.