A more commonly used expression if you are agreeing with a plan would be, "It/That sounds good to me." You could also say, "It/That is fine with me." A slang version is, "I'm good with that." As for your second question, you might say, "To me, it is fine." In this case, you are really using the same statement as the first one but you are dividing the sentence and changing the order of the words... "It is fine to me." becomes "To me, it is fine." They are the exact same words but in a different order and have the same meaning. However, you might put the "To me" in front if you are trying to emphasize your feelings as being different. For example, your friends all say that hamburgers are great but you disagree. You could say, "Hamburgers are gross to me." However, if you say, "To me, hamburgers are gross!" then the sentence seems to show stronger feeling. Of course this also depends on your tone of voice, etc.

All of them are prepositions. They describe a relationship between two things. Something can be "in" something else if it has entered it- "the fish is in the water." Something can be "on" something else if it sits on the surface of it- "the boat is on the water." Something can be "at" something else if it has arrived near it- "the tree is at the edge of the water."

You can look now for someone to be your supervisor to help and guide you, but if you do not get into the program (by meeting all the requirements) then they won't be your supervisor any more.

In this case, the language is meant to be descriptive in an artistic way rather than to be taken literally. The "sniff" refers to the fact that she has been crying. It is not literally injured. Rather, "injured" refers to her feelings that have led her to cry. She feels emotionally hurt (or injured) because of her feelings about the statement she has just made, and so she cries a little as she says it.

There are several words used to describe perfumes that are a little strange or hard to understand because they mean something different in conversational speech. I've learned that perfume makers sort-of have their own language. So, to me, in this sentence the word "powdery" seems confusing because it usually refers to texture instead of smell. This is what a perfume site says about the words use in perfume, "Powdery—a soft, hazy, opaque sensation imparted by the combination of heliotrope, violet, almond, and musk with herbal and citrus notes. Powdery fragrances can suggest makeup or Johnson & Johnson baby powder." So, I think, it refers to the scent as being soft or musky. Aromas can be difficult to describe in words so I think they try to evoke feelings when they describe them.

Either sentence about weather is correct depending on what you are trying to say. It is still a question of being plural or singular. If I am thinking only about a single major change like overall weather conditions being different with each season then I would say, "We experience change in the weather with each season." However, if I am thinking of all the various weather changes in a season then I might use "changes." Either can be used comfortably in conversational speech.

Taking the high road refers to how a person reacts to something negative from another person. For example, if a person calls you a rude name you might respond by calling them a rude name. However, if you refuse to be provoked then you are taking the high road. You might reply with something more direct or polite or by not responding at all. If you respond in an equally mean way then it might be said that you are "sinking to their level." If you do not respond rudely then you are "taking the high road." It refers to being more morally upright or taking the moral "high ground." If you add the word "way" to the front of this expression it may mean you are commending someone for taking the high road or that you are sarcastically commenting on the failure of someone to take the high road. It is a shortened way of saying something like, "Now, that was the way to take the high road." So if it is said to someone who reacted in a more polite way then it is a commendation. If it is said to someone who responded negatively, than it is a sarcastic way of reproving them.