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The lines ________ something very special to the Nasca people. (must / mean)
must have meant
We know water _________ easy to find. (can’t / be)
can't have been
The water in the area ________ disappeared . (might / disappear)
might have
People _______ the drawings for fun. (might / make)
might have made
The animal drawings _______ roads. (couldn’t / be)
couldn't have been
The animals _________ in the region. (must / live)
must have lived
