They _________ on the program for almost one week before I joined them, and now we are still working on it as no good results have come out so far.
#103812
A
have worked
B
had worked
C
have been working
D
had been working
推荐题目
I can’t send her an invitation. I wish I _______ her new address.
#101568
A
know
B
would know
C
had known
D
knew
Don’t worry. The hard work that you do now ______later in life.
#102150
A
will be repaid
B
was being repaid
C
has been repaid
D
was repaid
Jimmy said that he would come to pick me up, but he _______ by now.
#104117
A
hasn’t turned up
B
doesn’t turn up
C
won’t turn up
D
hadn’t turned up
They __________ two free tickets to Canada, otherwise they’d never have been able to afford to go.
#104606
A
had got
B
got
C
have got
D
get
All possible means ____ to prevent the air pollution, but the sky is still not clear.
#100326
A
is used
B
has been used
C
are use
D
have been used