Passive to active: 'Was/Were ... + past participle?' -> 'Did ...?'

This type of question, asked 2 times: 14 Jul 2023 S2, 20 Jul 2023 S3. All 2 questions below, oldest first.

Try each one first, then open its answer.

Question 1
14 Jul 2023 S2
89 $Select the option that expresses the given sentence in active voice. Was the bag packed by Mary?$
Tap an option to check your answer.
Question 2
20 Jul 2023 S3
83 $Select the option that expresses the given sentence in active voice. Was the conference not attended by them?$
Tap an option to check your answer.