. --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
The foreign guests,        by an interpreter, came out of the hall.
#92379
A
following
B
to follow
C
followed
D
to be followed
________ many times, he still couldn’t understand it.
#88586
A
Told
B
Being told
C
Having been told
D
Having told
They all appeared ___ this song before.
#97749
A
to learn
B
to have learned
C
to not have learned
D
not learning from