Although coal is the most polluting of fossil fuels, it is still the largest sources of energy worldwide. -> Despite... * mình làm như thế này Despite being the most polluting of fossil fuels, coal is still the largest sources of energy worldwide. nhưng cô lại sửa ntn: Despite being the most polluting of fossil fuels, It is still the largest sources of energy worldwide. Although they spent a huge amount of money on the film, they were unsuccessful. mình làm như thế này:In spite of spending a huge amount of money on the film, they were unsuccessful. nhưng cô lại sửa ntn:In spite of spending a huge of amount of money on the film, they were un successful.