I have some grammar problems with some sentences.
Please help to correct them.
Here there are:
Francis Drake have been one of the most famous of English sailors and pirates.
Once a small flit of 6 English ships were attacked by Spanish ships in the Atlantic Ocean.
Four of the English ships was burned and only 2 one of which has been commanded by Drake, came back to England.
Drake demanded that the king of Spain should pay him for the lose ships.
Of course, the king of Spain has refused to pay.
Thanks in advance.