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Tingling of left arm and occasional shortness of breath

In season 3 episode 7 of Pretty Little Liars, Hanna saw Mr. Dilaurentis, Alison's father come back to Rosewood and decided to talk to him. She apologized about what she did in the past year. It's been awhile since I've watched the other two seasons, what exactly is Hanna talking about? What did she do to the family? Thanks!

I'm taking Psychology as a major for university, but for my high school courses, should I take IB Chemistry or IB Biology because I have to choose one only, and the other course would have to be AP. So should I take IB Chemistry and AP Biology, or the other way around - IB Biology and AP Chemistry? Thank you!

I checked the wikia, but it wasn't there. It's sang by Lambo, and the title's: 雷はボンバ ヘッド ランボ

Please give me the romaji, and if possible english and kanji. Thanks!

I know that she had this little affair with the director of Snow White, but news says that people have been looking for a reason to hate her even before the cheating. Um, why exactly do people want to hate her?

There are many forms of 'sorry' in Japanese. And when Byakuya said sorry to Rukia when he told her about Rukia's sister, which one did he use? 'Wali', 'Siminasen', 'Gommen' (sorry for the misspelled Romaji). Also, which one did Ichimaru use when saying sorry to Rangiku when he left with Aizen? I know it's a weird question xD, but please answer if you can (: Thank you.

-Icy-