My hobbies are listening to music and swimming.
I belong to the guitar club and practice in the the audio-visual room after school every day
Your suggestion is not correct.That sentence is OK, but I'd say: "My hobbies are music listening and swimming"
"I belong to the guitar club" is fine and does not have any unwanted connotations. "I am a member of the guitar club" is also fine."I belong to the guitar club" it is good, but sounds very possessively, I mean phrase "A am member of guitar club" sounds more neutral.
My dream is to become a nursery school teacher. So this idea may be good.
Your suggestion is not correct.
The last sentence would sound better if you put "reply to me in writing....." I think. Also , the sentence before ....."My dream is to become a nursey school teacher,so this idea may be good " seems better as 1 sentence.
As always , maybe others will have a better idea on it.
Uncle Frank
I suppose the reason is that you don't "listen music", you listen to music. Compare "My hobby is bird-watching/bell-ringing/cake-making/etc.", which are all OK since you "watch birds", "ring bells" and "make cakes".
"I'd like you to reply to me writing your opinions about this topic." - Again, this isn't wrong by any means, but it's a bit wordy.
Try "I'd love to hear some opinions from you about this topic." - Though, the original sentence is fine the way it is.
ewww, I think you are also learning English through my questions. That's a good thing, isn't it?
(oh, it's hard for me to write your screen name since I know you're not Baka at all!).
I used "reply to" because the textbook instructed you to use it. Does "reply to" sound too formal?