—Look! Somebody ______the blackboard．—Well, it wasn't me．I didn't do it．
#101314
A
is cleaning
B
was cleaning
C
had cleaned
D
has cleaned
推荐题目
Some of the wolves there _____ the fur.
#99381
A
are hunting
B
are hunting for
C
hunt for
D
are hunted for
----We could have come here much earlier in your car. ----I agree. But it _____.
#99941
A
is repaired
B
was being repaired
C
had been repaired
D
is being repaired
One third of the class _____ agreed to be volunteers to help the aged this vocation.
#103534
A
are
B
is
C
has
D
have
We first met on a train in 2000．We both felt immediately that we _____ each other for years.
#103262
A
knew
B
have known
C
had known
D
know
---Didn’t the neighbour see the man breaking into the house? ---No, she ______ in the other direction.
#102892
A
had looked
B
was looking
C
looked
D
is looking