The first sentence is the most correct, however it sounds a little unnatural. It would be more natural to say "I am appalled at the great inefficiency of the government." Or, you could say "I am appalled at the great inefficiency demonstrated by the government."

I would probably say "had made" in the blank section.

This is funny! Maybe more of a cultural thing than a language thing. In the US, they have these long, poorly filmed commercials (called infomercials) which advertise a product and give you a number to call to immediately purchase that product. Usually these are weird kinds of inventions--special towels that can dry anything immediately, special pots that never require cleaning--that you can't buy in normal stores. These infomercials are usually on late at night or in the middle of the day. Similarly, American TV has entire channels of infomercials (called "shopping channels") with long, live shopping shows where they try to sell you skin care, jewelry, supplements, etc. You just "call the number on your screen" to purchase. So, when people say "I ordered it from the TV," they are usually referring to calling one of these numbers from an infomercial or shopping channel and buying a product that way. Edited to say: You wouldn't say "I ordered it from TV," even though you do say "I saw it on TV," and "Look, the man from TV!" For some reason, in English you do have to put the definite article in there for "I ordered it from the TV." Hope that's a little helpful! Maybe someone else can provide better reasoning for this.

All sentences are correct and sound natural.

<ul><li>I'm correcting with American grammar rules, just a disclaimer!</li><li>Be sure to keep punctuation marks inside of quotation marks</li><li>"M" dashes are used when you want to call out something within a phrase, not hyphens. In word, these can be created by using double dashes with no spaces--like this--.</li><li>This phrase is a little awkward, but I wasn't exactly sure what you intended to say, so this is my best guess: "Moreover, Mr. Ollivander wished that Harry would be destined for exactly this wand." </li></ul>

<ul><li>In English, programs like Boy Scouts and Pioneers are proper nouns, so they are capitalized.</li><li>I've corrected some words that are not usually used in conversational English, like "passageway" instead of "passage," "windows" instead of "glazing"</li><li>In English if you introduce a term that the audience may not be familiar with, it is customary to surround it by quotes the the first time you use it as a noun, especially if you follow the word with an explanation of what it means. This case is a little unusual, since "Pioneer" is used as the name of the building before it is defined as a scouting program, but I would still use quotes when you are introducing the audience to the name of the program. Sorry if that's a bit confusing!</li></ul>