sentence: Most of the content produced on the internet ( 50% ) is in English and , last but not least , although learning English can be challenging and steals some of our precious time , we can see that it is also very valuable to learn and can also create many opportunities .
modified: Most of the content produced on the internet ( 50% ) is in English and last but not least although learning English can be challenging and steals some of our precious time , we can see that it is also very valuable to learn and can also create many opportunities .
transformation: PUNCT, PUNCT