16Hit1600
Standard English ConventionsMediumVerb form after 'used to'

Standard English Conventions practice question

The mill used to ____ flour for the whole valley.

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

  1. A. grindCorrect
  2. B. grinding
  3. C. ground
  4. D. grinds

Answer: A. grind

'Used to' takes the base form.

Why the other answers are wrong

B. grinding
Participle.
C. ground
Past form.
D. grinds
Present tense form.

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