suggestions

• I advise you to  be more didactic in class.
• you should include more topics.
• I do recommend to have a better communication.
• I'd rather that the teacher don't let get in people that arrive late.
• your classes are nice.

theme most Easy

• The theme easier was present progressive.
• Because, it used the verb To be
• Because, the  verbs only adds ING.
• Because, There are not auxiliary
• Because, The verbs are equals without import if the sentences are Affirmative, interrogative and Negative.

theme most difficult

• The  theme most difficult was present perfect
• because it expressions change in affirmative,negative and interrogative.
• the present perfect theme was complex.
• the verbs use past participle.
• the meaning of the verb  for example have / has change because they are the auxilaries.

Present progressive

Curiosity of  brain 

 

When you are listening music you are relaxing the brain and at the same time causing a pleasant activity  for your body avoiding negative emotions.