1. It means "decorated" in this context. 2. Popularity. There's a very close connection between the popularity of chocolate and western Valentine's Day.

I don't speak much Spanish, but I use WordReference for French-English, and it has a Spanish-Chinese dictionary too: https://www.wordreference.com/eszh/ If you click on the Chinese words, you should see the pinyin.

For news, they are called "news anchors". For other shows in general (like game shows), they are called "hosts".

It's gibberish. It's just a bunch of random Chinese characters haha.

Your first sentence is ungrammatical, and it should be "how is the thing going at the library?" Now, depending on the context, both can be correct. When you use "the", the definite article, you are referring to a specific thing/person. So for the first sentence to make sense, both the speaker and listener(s) should know what "the thing" is, which could be an event. For example, if the library implemented a new system, and the speaker is curious about it, they can ask informally, "How is the thing (i.e. the new system) going at the library?" When you only want to know about the library in general, nothing specific, you would ask "how are things going at the library?"

"Jealous much" basically means "Are you very jealous?" It's a colloquialism. It's informal, and it can be seemed as a cute or sarcastic version of "jealous?". Please note that "jealous much?" is different from "are you jealous much?" The former indicates intensity, while the latter frequency. If you'd like to know more about the "X much" construct, here's a nice article on Language Log about it: https://languagelog.ldc.upenn.edu/nll/?p=2836

1. 我要看哪一页？or 我(应)该看哪一页？ 2. It depends on the context, but it's very likely a bus stop. 3. For the first one, I'm not sure if you are referring to study materials or reviewing a book. If it's the former, your translation is fine. If it's the latter, I'd say something like 我在复习这一本书。 我还没写完呢 is perfect. 以前我很忙 is fine, but 我以前很忙 is more common, and sounds more natural.

In the US, people in general refer to public bathrooms as restrooms, which include the ones in restaurants, at schools, in airports, etc. To be honest, many people use restroom and bathroom interchangeably, though the former is considered somewhat more polite.