I smell something ( ) in the kitchen.Can I call you back in

I smell something ( ) in the kitchen.Can I call you back in aminute
A.burning B.burnt C.being burnt D.to be burnt
C ,我的理由是 某些东西被烧焦了,所以用现在一般式的被动态
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另一题：
We were praised for ( ) our work ahead of time .
A.finishing B.having finished C.being finished D.finish
A,理由是 介词 for 后面接 动名词 finishing .
可是正确答案是 B.
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