Institution: জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় (JKKNIU) Exam: ক ইউনিট || জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় || 2012
Topic: Voice, Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The question requires transforming the active sentence "I know that he did the work" into passive voice. In the original sentence, "I know" indicates the subject's understanding or awareness of another's action—in this case, "he did the work."

Evaluating the options provided:

- **A) It is know by me that he did the work** - This option incorrectly uses "know" instead of the correct form "known" and maintains the active form "he did the work," which doesn’t transform it into passive voice effectively.

- **B) It is known to me that he did the work** - While "known" is correctly used here, it still retains an active sense regarding "he did the work" rather than focusing on the action being completed.

- **C) It is known to me that the work has been done by me** - This significantly alters the meaning by suggesting that "I" did the work, rather than "he," thus failing to represent the original intent.

- **D) It is know to me that the work was done my hime** - Though this option contains a typo (“my hime” should be “by him”), it reflects the correct passive structure by indicating that the work was completed by someone else ("was done by him"), which aligns with the necessary transformation of the original sentence.

Thus, option D ultimately presents the passive voice form most aligned with the original meaning, despite the minor error in wording.