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
- Why do you look so worried?- My MacBook Pro broke down and my paper______unfinished since.
#100291
A
was left
B
has left
C
left
D
has been left
In the past few years, sea ice ____ in the Arctic as a result of global warming.
#101821
A
had melted
B
has been melting
C
melted
D
is melting
This is the first time we _______ a film in the cinema together as a family.
#101676
A
see
B
had seen
C
saw
D
have seen
This is the second time that the top 10 list of popular novels _____ published by this magazine.
#102447
A
has been
B
are
C
is
D
have been
Turn on CCTV news and we ________how happy our life is. But there is no denying that over the past decades, the cost of living ________ sharply.
#100307
A
are seeing; had increased
B
will see；has been increasing
C
see; increased
D
have seen; is increasing