All possible means __________.However, nothing can __________ Jack from adventuring in that mysterious forest.
#63982
A
has tried; stop
B
has been tried; keep
C
have tried; keep
D
have been tried; prevent
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The petrol in the car _____ on our way to the beach, so we had to walk there.
#73232
A
gave up
B
gave off  
C
gave in
D
gave out
Public attention at the moment _______ the World Cup matches.
#74893
A
focuses
B
is focused
C
is focused at
D
is focused on