In 1967, a research team from an Am

In 1967, a research team from an American university
(1)_out to explore the Well of Sacrifice at
Chichen Itza. Unfortunately, however, the water in this well was so dark that is was impossible for divers to see, so the team had to use filters to clean it.
Just as this work was about to begin, some
(2)_Indians told the team that the well was
(3)_by the spirit of a rain god. The god was
(4)_as Chac, and they warned the team that
Chac would (5)_revenge if his home was
disturbed. The team listened politely but (6)_
these warnings and went on with their research.
(7)_the summer, pumps and filters were
used, but it wasn't until (8)_months later
that the water was clear enough for divers to go down into the well.
When they got (9)_to work they began to
discover various objects at the (10)_of the
well. (11)_the things tbey brought back to
the surface were human bones, and by the time they
had (12)_, they had recovered more than 50
skeletons. This was (13)_that the well had
indeed been used for human sacrifice.
Perhaps it would have been better if the team had
(14)___to the warnings of the Indians, because
within a year, several members of the team had been
(15)_in mysterious accidents.