Can someone check my answer?

Iopened the door quietly,then stood in the doorway rewrite using ..ing participle

This lesson explored netiquette as well as the negative implications of internet use, such as privacy invasions and cyberbullying. what are three online practices that you will change after this lesson? first, list the three things that you'd change. then, describe the new behaviors and explain your reason for adopting them.

In a group discussion, which statement most clearly uses evidence to support a conclusion? a) the author makes some good points, but i feel that he’s ultimately biased. b) the author proves that he’s biased when he uses terms like “silly” and “stupid”. c) the author obviously hates the way fast food tastes, which is why he’s negative. d) the author first criticizes fast food, and then goes in to criticize junk food.