Sentences in English

I'm reading a book and when I find a word I don't know I create a sentence. Please correct my mistakes.
1) I need to complete a number of tasks until before I will be able to go to university. (the word is task)
2) I'm anticipate that this is not a good marriage will fail (not a good match). (the word is anticipate)
3) While I was hanging out and having a good time, my peers had to study and attend lectures from academics in the university. (the word is peer)
4) Don't spend all your day sitting near your computer, go to a cinema, a park or whatever else. (the word is whatever)
5) I don't like sitting on the sofa or chair, I prefer sitting cross-legged on the floor. (the word is cross-legged)
6) They always gossip about the love relationships of their friends. (the word is gossip) It is not necesssary to include "love" in that sentence.
7) In the day I was accepted in by the university I received the acceptance letter. (the words are accept and acceptance) It would be better as: "The day I received the university acceptance letter, was when I accepted the role of student."
8) I was so thrilled when he asked me to marry him.
9) I applied for courses at three universities and, because of my high grades, all of them sent me acceptance letters.
10) My income isn't high but I hope my restaurant will become very popular and I will become a very rich person.

Alice, I have tried to retain much of what you wrote in each sentence.

I need to complete a number of tasks before I can go to the university.

I'm anticipating a lot of presents for Christmas.

Peers sentence is good.

Your sentence with whatever should use wherever.  Better is:

She bought corn, carrots and whatever other vegetables she could find.

cross-legged sentence is good.

The always gossip about their friends' lovelives.

The day I was accepted to the university, I received an acceptance letter.

Thrilled sentence is good

I applied to three universities, and, because of my high grades, all of them sent me acceptance letters.

This sentence is called a run-on:

My income isn't high but I hope my restaurant will become very popular and I will become a very rich person.

It's because you have two conjunctions ... ,and  и but,

Solve it by breaking it into two sentences.

My income isn't very high. But I hope my restaurant will become popular, and I'll become rich.

Cheers,

Wayne

Sentences in English

I'm reading a book and when I find a word I don't know I create a sentence. Please correct my mistakes.
1) I need to complete a number of tasks until I will able to go to university. (the word is task)
2) I'm anticipating that this is not a good marriage (not a good match). (the word is anticipate)
3) While I was hanging out and having a good time my peers had to study and attend academics in university. (the word is peer)
4) Don't spend all your day sitting near your computer, go to a cinema, park or whatever else. (the word is whatever)
5) I don't like sitting on the sofa or chair, I prefer sitting cross-legged on the floor. (the word is cross-legged)
6) They always gossip about the love relationship of their friends. (the word is gossip)
7) In the day I was accepted in university I received the acceptance letter. (the words are accept and acceptance)
8) I was so thrilled when he asked me to marry him.
9) I applied for three university and, because of my high grades, all of them sent me acceptance letters.
10) My income isn't high but I hope my restaurant will become very popular and I will become a very rich person.

Sentences in English

I'm reading a book and when I find a word I don't know I create a sentence. Please correct my mistakes.
1) I need to complete a number of tasks until before I will able to go to university. (the word is task)
2) I'm anticipating (I think) that this is not a good marriage (not a good match). (the word is anticipate) Anticipate = think something will happen in the future.
3) While I was hanging out and having a good time my peers had to study and attend academics (classes) in university (at the university) (the word is peer)
4) Don't spend all your day your whole day sitting near in front of your computer, go to a cinema, park or whatever else.("whatever else you like" or just "whatever"). (the word is whatever)
5) I don't like sitting on the sofa or chair, I prefer sitting cross-legged on the floor. (the word is cross-legged)
6) They always gossip about the love relationships of their friends. (the word is gossip)
7) In On the day I was accepted in to the university I received the acceptance letter. (the words are accept and acceptance)
8) I was so thrilled when he asked me to marry him.
9) I applied for to three universities and, because of my high grades, all of them sent me acceptance letters.
10) My income isn't high but I hope my restaurant will become very popular and I will become a very rich person.

I'm reading a book and when I find a word I don't know I create a sentence. Please correct my mistakes.
1) I need to complete a number of tasks until so that I can able to go to university. (until is here an expression of time, and I don't think that's what you mean)
2) I'm anticipating that this is not a good marriage (not a good match).

A better alternative for the same sentence: I don't expect/anticipate much of this marriage.

A more common use of "anticipate": 'he could always anticipate the problems that are about to come.'

3) While I was hanging out and having a good time my peers had to study and attend academics in lectures at the university.
4) Don't spend all your day sitting near your computer, go to the cinema, park or wherever else.

Better example of whatever: 'When I'm hungry, I eat whatever I find in the fridge'.

5) I don't like sitting in sofas or chairs, I prefer sitting cross-legged on the floor.
6) They always gossip about the love relationship of their friends.
7) On the day I was accepted at the university, I received the acceptance letter/admission letters.
8) I was so thrilled when he asked me to marry him.
9) I applied for three universities and, because of my high grades, all of them sent me acceptance letters.
10) My income isn't high but I hope my restaurant will become very popular and I will become a very rich person.

Excellent way to improve your English!