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Alc24 Posted 14 years ago
Grammar

at or by?

Which is correct please?
3 In pole vaulting, the crossbar is raised by a minimum interval of 5 cm at a time.
In pole vaulting, the crossbar will be raised at/by minimum intervals of 5 cm at a time.

Thank you
  

Top answer

In pole vaulting, the crossbar is raised by a minimum interval of 5 cm at a time.

  • In pole vaulting, the crossbar is raised by a minimum interval of 5 cm at a time.
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1 Answers
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In pole vaulting, the crossbar is raised by a minimum interval of 5 cm at a time.

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