Mr. Thomas talked …. about the successes of his institute in the past year

Mr. Thomas talked …. about the successes of his institute in the past year
  • A.
    at a great length
  • B.
    for great length
  • C.
    at great length
  • D.
    for a great length
  • E.
    at great lengths
Correct Answer: Option C
Explanation
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