16Hit1600
Standard English ConventionsEasy–MediumIrregular past participle after 'have'

Standard English Conventions practice question

The stones have ____ more than a million loaves' worth of flour.

Which choice completes the text so that it conforms to the conventions of Standard English?

  1. A. groundCorrect
  2. B. grinded
  3. C. grind
  4. D. grinding

Answer: A. ground

'Have ground': the past participle of 'grind'.

Why the other answers are wrong

B. grinded
'Grinded' is not a form.
C. grind
'Have grind' is not a form.
D. grinding
'Have grinding' is not a form.

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