I've wanted to comego back to my hometown. I want to go back to my hometown.

I've wanted to comego back to my hometown. I wanted to go back to my hometown.

In Japan, a little holiday called Gorldenw Week has begun fromstarting today. In Japan, a little holiday called Golden Week has begun starting today.

In Japan, a little holiday called Gorldenw Week has begun frombegan today. In Japan, a little holiday called Golden Week began today.

In Japan, a little holiday called Gorldenw Week has begun fromstarting today. In Japan, a little holiday called Golden Week has begun starting today.

Most of my dormitory's members have already comgone back their home, but I'll spent all ththe entire holiday here, because my hometown is very far from this university. Most of my dormitory's members have already gone back home, but I'll spent the entire holiday here, because my hometown is very far from this university.

"Go" is from here to another place, and "come" is from another place to here.

Most of my dormitory's members have already comgone back to their homes, but I'll spent all thd the entire holiday here, because my hometown is very far from thise university. Most of my dormitory members have already gone back to their homes, but I'll spend the entire holiday here because my hometown is very far from the university.

Most of my dormitory's members have already comgone back their home, but I'll spent all thd the entire holiday here, because my hometown is very far from this university. Most of my dormitory members have already gone back home, but I'll spend the entire holiday here, because my hometown is very far from this university.

(1) "Dormitory's members" is grammatically correct but unnatural-sounding. It's like how we say "classmate" but not "class' mate". (2) As Maji has said, whether you use "go" or "come" will depend on the location from which you're writing. (3) In the expression "go back home", it is often redundant to specify whose home you're referring to. (4) "I'll" refers to the future, so "spend" (present tense) is used instead of "spent" (past tense). (5) Typically, "all (of)" is used with plural or uncountable nouns, while "entire" is used with singular nouns. "the holiday" is singular, so "entire" is expected.

Perhaps, it'll take more than 8 hours, and I will have to pay more than 10,000 yen to comego back. Perhaps it'll take more than 8 hours, and I will have to pay more than 10,000 yen to go back.

Perhaps, it'llThe trip could take more than 8 hours, and I would have to pay more than 10,000 yen to come back. The trip could take more than 8 hours and I would have to pay more than 10,000 yen to come back.

Perhaps, it'llIt'll probably take more than 8 hours, and I'll have to pay more than 10,000 yen to comego back. It'll probably take more than 8 hours, and I'll have to pay more than 10,000 yen to go back.

(1) "Probably" is a stronger version of "perhaps", and implies much more certainty. I find it more natural here. However, starting a sentence with "probably" generally sounds unnatural, so I've shifted it back. (Conversely, starting a sentence with "perhaps" is completely normal.) (2) Be careful to keep the tense consistent! You used "it'll", so you should use "I'll" as well. ("I'd" as suggested by carjaco is also acceptable.)

Of course, I don't have enough money to do that, so I have to bear tocan't do that until this summer vacation. Of course, I don't have enough money to do that, so I can't do that until this summer vacation.

The word 「我慢」 was lost, but this sounds more natural.

Of courseUnfortunately, I don't have enough money to do thatfor the trip, so I will have to bear to do thatstaying here until this summer vacation. Unfortunately, I don't have enough money for the trip, so I will have to bear staying here until summer vacation.

Of course, I don't have enough money to do that, so I'll have to bear to do thawith it until (this) summer vacation. Of course, I don't have enough money to do that, so I'll have to bear with it until (this) summer vacation.

(1) The expression is "to bear with (something)". Another expression for "我慢する" is "to make do". (2) You omit "this". It'll still be understood that you're referring to the coming summer vacation.

I want to mseet my family earlyas soon as possible. I want to see my family as soon as possible.

"Meet" sounds like meeting for the first time, so we usually say "see" instead for people we already know.

I want to meet my family earlysoon. I want to meet my family soon.

I want to mseet my family earlysoon. I want to see my family soon.

There are three cases in which we will use "meet" in this context: 1 — When you're seeing someone for the first time. For example: "I met my friend's parents when I went to her house." 2 — When you and the other person have intentionally decided on a time at which to see each other. For example: "I met my friend for lunch." 3 — When you run into a person unintentionally. For example: "I met my friend while walking to school." In your sentence, "see" might be a little more natural.