16Hit1600
Standard English ConventionsEasy–MediumPast participle after 'has'

Standard English Conventions practice question

The river has ____ its course twice in the last century.

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

  1. A. changedCorrect
  2. B. change
  3. C. changing
  4. D. changes

Answer: A. changed

'Has' takes the past participle.

Why the other answers are wrong

B. change
Base form.
C. changing
Present participle.
D. changes
Present tense.

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