1. Complete the following passage using the verbs from the boxes in the past tense.
There will be one extra verb.
arrive – help – learn – think – hit - appear
Water is an essential part of our planet. Without water, no life would be possible. We all ___________________
about the water formula and its cycle in nature. We have also seen how much water there is in the oceans on maps,
but... do we know how water _____________________on our planet?
One of the most known theories says that water _______________________in our planet because asteroids and
comets have water in them in the form of ice. In the Pre-Cambrian era, thousands of meteorites
__________________________the surface of Earth, causing great destruction. The water stayed on our surface and
________________________ create life.
Another theory claims that water existed on Earth from the beginning. Scientists have discovered some asteroids as
old as our planet and found evidence of water in them. According to some experts, water could have appeared
before we even ___________________ .
Respuestas
Water is an essential part of our planet. Without water, no life would be possible. We all learn
about the water formula and its cycle in nature. We have also seen how much water there is in the oceans on maps,
but... do we know how water appear on our planet?
One of the most known theories says that water arrive in our planet because asteroids and
comets have water in them in the form of ice. In the Pre-Cambrian era, thousands of meteorites
hit the surface of Earth, causing great destruction. The water stayed on our surface and
help create life.
Another theory claims that water existed on Earth from the beginning. Scientists have discovered some asteroids as
old as our planet and found evidence of water in them. According to some experts, water could have appeared
before we even think.
Si no me equivoco creo que este seria el orden correcto, las que están en negrilla son las palabras clave.
Espero haberte ayudado. :)
Water is an essential part of our planet. Without water, no life would be possible. We all learn
about the water formula and its cycle in nature. We have also seen how much water there is in the oceans on maps,
but... do we know how water appear on our planet?
One of the most known theories says that water arrive in our planet because asteroids and
comets have water in them in the form of ice. In the Pre-Cambrian era, thousands of meteorites
hit the surface of Earth, causing great destruction. The water stayed on our surface and
help create life.
Another theory claims that water existed on Earth from the beginning. Scientists have discovered some asteroids as
old as our planet and found evidence of water in them. According to some experts, water could have appeared
before we even think.
Si no me equivoco creo que este seria el orden correcto, las que están en negrilla son las palabras clave.
Espero haberte ayudado. :)