The special medicine for the disease was difficult to find though ________ everywhere.
#79519
A
sought
B
having sought
C
being sought
D
having been sought
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Hardly    _ out of the cave when there was a big bang and the entrance was blocked.
#81717
A
I did rush
B
I had rushed
C
did I rush
D
had I rushed
 Only when class began _______that he had left his book at home.
#84018
A
will he realize
B
he did realize
C
did he realize
D
should he realize