高手帮帮忙 i smell something buring 为什么用主动的

I can smell something burning!I can smell something buring! I can smell something burning . I can smell something burnt. “Do you smell anything unusual?” “Yes.I can smell something I smell something ____in the kitchen. I smell something _______(burn) in the kitchen! 填什么?为什么? i can smell something burning,请问为什么burn加ing,什么语法现象 i smell something is burnning对还是i smell something burnning! buring的中文是什么意思? buring的中文意思? buring的意思 Buring --- Oh,dear,I smell something ______.\x0b