Unless ________ to answer questions, the pupils won't talk in Mrs Smith's class.
#88754
A
asking
B
asked
C
being asked
D
having asked
推荐题目
It was so cold that they kept the fire ________all night.
#98372
A
to burn
B
burn
C
burning
D
burned
Upon ________ his studies, he started travelling in China. 
#90548
A
finish
B
finishing
C
he finished
D
finished
 All passengers________ in the accident were sent to the nearby hospital.
#96696
A
to find injured
B
finding to injure
C
to be found injured
D
found injured
__________that no one enjoys__________________.
#92887
A
He seems; to be looked down on
B
He is seemed; being looked down upon
C
It seems; to be looked down upon
D
It seems; being looked down upon