Mary is one of the girls who ______ always on time.                    
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A
is
B
am
C
are
D
was
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I got caught in the rain and my suit____.
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A
has ruined
B
had ruined
C
has been ruined
D
had been ruined
Edward, you play so well. But I ________ you played the piano.
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A
didn’t know
B
hadn’t known
C
don’t know
D
haven’t known