.Elephants, which are the largest mammals on the earth, have almost no natural enemies ______ human beings.
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A
rather than
B
other than
C
more than
D
less than
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 He ______ to get out of trouble, but no one would help him.
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A
succeeded
B
attempted
C
managed
D
offered
The stones each ________ as much as two tons.
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A
weighs
B
are weighed
C
weigh
D
is weighed