No worker and no engineer           who it is that is           for the explosion of the chemical factory.
#85749
A
know; to blame
B
would know; blamed
C
know; to be blamed
D
knows; to blame
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All possible means ______. However, nothing can _____ his wife dying of lung cancer.
#85909
A
has tried; stop
B
have tried; keep
C
have been tried; prevent
D
has been tried; stop
Here are my        !
#44009
A
sister
B
pictures
C
son
D
dog