—Sorry, I didn’t hear the door bell ring.—Your bell         . Perhaps it needs repairing.
#102736
A
never worked
B
is never working
C
never works
D
had never worked
推荐题目
Look out! The train ________.
#99925
A
leaves
B
is leaving
C
has left
D
left
This is the second time Nie Haisheng ________ to be the astronaut who took the glorious task.
#104309
A
has been chosen
B
had been chosen
C
was chosen
D
chose
At that time he looked angry because his son______computer games all the afternoon
#103168
A
played
B
was playing
C
has played
D
had been playing