Question

I smell something __________ in the kitchen. Can I call you back in a minute?

Answer 1

答案A
smell
something
burning意为“闻着厨房里什么东西在燃烧”。根据后面的语境，所以选A项。smell
something
burnt表示“闻着什么东西烧焦了”,与题意不符；smell后不接带to的不定式作宾语补足语。