. --Can you smell something _________  in the house? --Oh! I forgot to turn off the gas cooker! 
#88854
A
to burn
B
burning
C
having burnt
D
having been burnt
推荐题目
May I use your pen please? I have no pen ___.
#97790
A
to write
B
to wtite with
C
for writing
D
to write by
He hid himself behind the door to avoid _____.  
#97063
A
to see   
B
to be seen  
C
being seen  
D
seeing
_____ to ten years in prison, the man lost all hope.
#95404
A
Be sentenced
B
Sentencing
C
To sentence
D
Having been sentenced.