At best oil and water replied the engineer adding that the engine had only recently received his service

Can you repeat this sentence, but add in punctuation?
At best, oil and water, replied the engineer, adding, that the engine had only recently received his service.
The king himself had a collection of rare and unusual objects and much later this was to form the basis of the Old Nordic Museum now known as the National Museum

Can you repeat this sentence, but add in punctuation?
The king himself had a collection of rare and unusual objects, and much later this was to form the basis of the Old Nordic Museum, now known as the National Museum.
Do not worry because it will not be difficult because they are just the same with the iPOPS continuation of the tournament

Can you repeat this sentence, but add in punctuation?
Do not worry because it will not be difficult because they are just the same with the iPOPS continuation of the tournament.