In each question in the following, four alternative sentences are given. Choose the CORRECT one.

Correct answer: D. Not until the next morning did she realize how serious it was.

  • A. Not until the next morning did she realized how serious it was.
  • B. Not until the next morning did she realize how serious it was?
  • C. Not until the next morning she realized how serious it was.
  • D. Not until the next morning did she realize how serious it was.

Explanation

"Not until the next morning did she realize how serious it was."

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