✅ When converting an indirect yes/no question with 'whether' to direct speech, the conjunction is removed, and the tense is shifted back to its original form.

The past perfect 'had seen' in indirect speech reverts to the simple past 'Did you see' in direct speech, as this is the form of the original question.

❌ Option A, "Had you seen," keeps the past perfect tense, which is the backshifted form for the direct speech simple past or present perfect, thus not reverting correctly.

❌ Option C, "Have you seen," uses the present perfect, which would typically backshift to 'had seen' if the reporting verb was in the past, but 'Did you see' is the more direct original question for 'had seen' in this context.

❌ Option D, "You saw the new movie?" is grammatically informal and lacks the auxiliary verb required for a standard direct question.

✅ When converting from indirect to direct speech, the past perfect continuous tense ("had been working") reverts to the present perfect continuous tense ("have been working").

The pronoun 'he' in indirect speech, referring to the speaker, correctly changes to 'I' in direct speech.

❌ Option B uses the simple past continuous, which is not the correct tense reversal for past perfect continuous.

❌ Option C retains the indirect pronoun 'he' and the past perfect continuous tense, failing to revert to the original direct form.

❌ Option D incorrectly changes the pronoun to 'You', altering the speaker's original statement and perspective.

✅ When converting from indirect to direct speech, the pronoun 'she' reverts to 'I' as the original speaker refers to themselves.

The past perfect tense 'had visited' backshifts to the past simple 'visited' (or present perfect, but past simple is appropriate here for a completed action with a specific past time). The time expression 'the previous year' also reverts to its original direct form, 'last year'.

❌ Option A incorrectly retains the past perfect tense ('had visited') from the indirect speech, which should revert to past simple for direct speech.

❌ Option B incorrectly keeps the third-person pronoun 'She' instead of changing to the first-person 'I', which is how the speaker would refer to themselves.

❌ Option D incorrectly retains the indirect time expression 'the previous year' instead of converting it back to the direct speech equivalent 'last year'.

✅ To convert to direct speech, the pronoun 'she' in the indirect statement reverts to 'I' as the speaker is reporting her own words.

✅ Additionally, the past continuous 'was going' backshifts to the present continuous 'am going' to reflect the original tense used.

❌ Option A uses the incorrect pronoun 'She' and does not revert the tense from the reported speech perspective.

❌ Option C incorrectly keeps the past continuous tense 'was going' instead of shifting back to present continuous.

❌ Option D changes the pronoun to 'You', altering the speaker's original statement and perspective.

✅ The direct speech "I finished my work an hour ago" correctly backshifts to "he had finished his work an hour ago" in indirect speech. The pronoun "I" becomes "he", the simple past "finished" becomes past perfect "had finished", and "an hour ago" remains as it is a specific time relative to the reported action.

❌ Option B "I had finished my work an hour ago" retains the past perfect tense from the indirect speech, which is incorrect for direct speech when the original action was simple past.

❌ Option C "He finished his work an hour before" uses the wrong pronoun ("He" instead of "I") and changes the time phrase "an hour ago" unnecessarily to "an hour before".

❌ Option D "I will finish my work an hour later" changes the tense and meaning completely, implying a future action rather than a past completed one.