Although ______ for many years, the two old sisters recognized each other at once.
#5021
A
having been separated
B
being separated
C
having separated
D
had been separated
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The boy is very brave. I _______ he ________ the tall tree.
#4584
A
dare to say; dare climbing
B
dare say; dares to climb
C
dare say; dares climb
D
dare to say;dares to climbing
Edward, you play so well. But I ______ you played the piano. 
#5038
A
didn’t know
B
hadn’t known
C
don’t know
D
haven’t known