It seems that oil______from this pipe for some time.We’ll have to take the machine apart to put it right.
#104361
A
had leaked
B
is leaking
C
leaked
D
has been leaking
推荐题目
Food will include buffalo that________________ over an open fire . 
#103303
A
roasts
B
is roasting
C
will be roasted
D
had been roasted
  He is too careless and he _______ keys.
#104138
A
always lost  
B
always loses
C
is always losing
D
will always lose
Having broken the traffic rules, Tom _____from driving for a year.
#103242
A
has banned
B
had banned
C
is being banned
D
has been banned