They _____ on the program for almost one week before I joined them, and now, we ____on it as no good results have come out so far.
#100667
A
had been working; are still working
B
had worked; were still working
C
have been working; have worked
D
have worked; are still working
推荐题目
. One of the skaters talented enough to stop her is Asada, who _____ against her since they were junior skaters.
#103813
A
would compete
B
is competing
C
has been competing
D
is being competed
(2013·湖南，26)If nothing________，the oceans will turn into fish deserts.
#99736
A
does
B
had been done
C
will do
D
is done
Wang Pin is an advanced worker in our company. He _______ for four years in Yangzhou University.
#103542
A
studied
B
has studied
C
had studied
D
has been studying
Mary is the only one of the students in our class who ____ to the Great Wall so far.
#103115
A
is
B
has been
C
are
D
had been