Great changes _____ in China in the past 30 years and many Chinese are living a happy life today. 
#99354
A
took place
B
were taken place
C
have taken place
D
have been taken place
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-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
In the last ten years, they _______ three great scientific experiments. 
#103919
A
finished
B
have finished
C
had finished
D
have been finished
-----What’s that terrible noise? -----The neighbours ________ for a party.
#102452
A
have prepared.
B
are preparing.
C
was preparing.
D
will prepare.