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
In general, most tennis ________ on hard courts or on clay.
#99493
A
plays
B
is played
C
has played
D
has been played
－I’ll come to see your performance at 9:00 tomorrow morning.－I’m sorry, by then my performance ______ and I _______ reporters in the meeting room.
#101125
A
will end; will meet
B
will have ended; will be meeting
C
will be ended; am going to meet
D
is to end; will be meeting
Look ! The building which _________now will be used as a library.
#102581
A
is being built
B
to be built
C
is built
D
being built
By the end of last year, another new gymnasium ______ in Beijing.
#100934
A
would be completed
B
was being completed
C
has been completed
D
had been completed
Every year, the coal workers their lungs X-rayed to ensure their health.
#101931
A
are having
B
have had
C
have
D
had had