8. Change the sentences as in the example. Use the Passive Voice.

Explanation:

The task is to convert sentences from active voice to passive voice, following the provided example. The example shows how 'My dad built this house' (active) becomes 'This house was built by my dad' (passive). This involves making the object of the active sentence the subject of the passive sentence, using a form of 'to be' + past participle, and optionally including the original subject in a 'by' phrase.

Answers:

1. Original: Beginners use this dictionary.
   Passive: This dictionary is used by beginners.
2. Original: Granny cooked pasta with mushrooms and cream.
   Passive: Pasta with mushrooms and cream was cooked by Granny.
3. Original: A mechanic repaired my car.
   Passive: My car was repaired by a mechanic.
4. Original: The teacher settled our problems.
   Passive: Our problems were settled by the teacher.