. --Can you smell something in the house?
--Oh! I forgot to turn off the gas cooker!
A. to burn
B. burning
C. having burnt
D. having been burnt
网友回答
A. to burn
(答案→)B. burning
C. having burnt
D. having been burnt
解析：句意：--你能闻到房间里面有东西正在燃烧吗？--哦，我忘了关掉煤气灶了。这里smell后面接的是复合宾语（宾语+宾语补足语）因为something和burn是主动关系，用现在分词做宾语补足语，所以选B。