(湖南省怀化市2014年高三第二次模拟考试)22. Tom, you play the violin so well. But I ______ you can play the violin.
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A
didn’t know
B
don’t know
C
hadn’t known
D
haven’t known
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Residents ________ not to go out alone or to take part in any groups during the period of recent terrorist activities. 
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A
were always being warned
B
are always warning
C
always warned
D
had always been warned
The church tower which_________will be open to tourists soon. The work is almost finished.
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A
has restored
B
has been restored
C
is restoring
D
is being restored
Jim talked for about half an hour yesterday. Never__ him talk so much.
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A
I heard
B
did I hear
C
I had heard
D
had I heard