Final answer:
The answer provides corrected sentences addressing the grammatical mistakes.
Explanation:
The correct grammatical fixes for the given sentences are:
- I need to take my car to a mechanic as there is something wrong with it.
- If you move house, don't forget you need to update the address on your driving licence.
- Check with your local bus company whether it's always better to buy a return ticket, as sometimes it can be cheaper to buy a single ticket.
Learn more about Grammar corrections in English sentences here:
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