I was chatting on the Internet last night when I smelt something   in the next room.
#95356
A
burning
B
to burn
C
be burnt
D
to be burnt
推荐题目
The old lady devoted her lifetime _______ the homeless children.
#97652
A
to help
B
to helping
C
helping
D
for help
______ by jeep, we visited a number of cities in South China.
#91867
A
Traveling
B
Traveled
C
To be traveling
D
Having traveled
Mr Smith, _____ of the _____ speech, started to read a novel. 
#93757
A
tired; boring
B
tiring; bored
C
tired; bored
D
tiring; boring