根据对话内容，从方框内的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

A：You look unhappy today． ．
B：Yesterday when I came home，I found my parents looking through my schoolbag．I got very angry．Shouldn't I keep my own secrets?
A：Of course you can keep your private ideas and secret things ．
B：No，but I shouted to them．They didn't say a word．They just kept silent． ．
A：In fact，your parents shouldn't look through your schoolbag．They should respect your privacy． ．They want to make sure you aren't in any trouble，and they want to understand your life and study better in this way．Maybe you hurt your parents．
B：I agree． ．
A：Say sorry to them．Try talking to them more．Let them know what you are doing，so that they won't worry about you so much．
B：OK．I'll do as you told me．