题目内容：

I told the firemen it was my careless cooking that caused the heavy smoke and that I would be careful later.
这个句子的先行词是哪个?顺便翻译一下句子的意思

优质解答

my careless cooking是先行词
我告诉消防员由于我烧饭时的粗心才引起的浓烟,并且承诺以后会小心.