Can you correct my homework

The sonnet CXVI is one of 154 Shakespeare' s sonnets. It was probably written between 1593 and 1599. It is made of 3 quatrains and a couple and the rhyme scheme is ABAB CDCD EFEF GG.
This sonnet gives a definition of Petrarchian and Platonic love. True love is described as something unmovable, like a fixed mark or a leading star.
I like very much this sonnet because it gives an idea of love which I share. I agree with the poet when he says "love is not love which alters when it alteration finds".

This is fine! :) Very good English! The only other thing I would advise you to change would be the way the words are arranged, from 'I like very much' to 'I very much like'. It sounds better to an English speaker. The first one just seems unnatural and is not correct grammar. Hope this helped!

Speak english

hello! my name is Carmen, I'm from Spain.
I study Business and to speak speaking English is so important for my future. In Spain we study this language since we have are eight years old but in my case, the nivel is very loud. (not quite sure what 'nivel' means or what you're trying to say there)
For me, the best of speak thing about speaking different languages is that I can comunicate with pepople of all the world. I like people and I think that to know other cultures is amazing! I haven't had the opportunity to live in other country but when I 'll finish my career the next year I want to go at other places.

Hi! You've made a few mistakes here but you're understandable! :)

Parenting

Due to learning English, I started to communicate with people of different ages from other countries. I noticed that most of the people of my age study at the University, work and travel a lot, engage in sports, and sometimes go to disco clubs, cinema and other entertainment places. My lifestyle differs very much from theirs.

I got married in 21 and my daughter was born when I was 23. By that time, I graduated the University and had 2 years professional experience. After 5 years my son was born. I am happy to be a mother and to have two kids. I enjoy taking care of them, teaching them and playing different games. My husband and I are trying to raise smart, hardworking, honest and kind kids. We usually go for a walk in a (the?) warm season, roller skate or go sledding. When the weather is bad, we play computer and table games or make craftworks at home.
I think, that twenties is the best period for pregnancy biologically because women usually don't have too many chronic health problems. It is also easier for parents and kids to understand each other, to become good friends and enjoy many activities together.

On the other side hand, it is a great responsibility to be a parent. 24/7 we must think about the health, education, safety of our kids. Sometimes I don't have a chance to go out for weeks. I can't sleep during the nights when they feel bad. Work, kids and home cares take all my time. I stopped even think about disco and fitness clubs, sports, beauty salons and so on. It is hard to change something in our life, for instance to move to another city or country. My husband and I want to travel to Spain, Singapore, Canada and Australia, but we can travel there at least in five years, when the kids grow up a little bit. At the same time, we don't know if we will have enough money for travelling or it will be better to spend this sum on the kids education, for example.

I hope we have properly planned our life, will be able to provide worthy future for our kids and will find the way to satisfy our own needs too.

Anyway, to be a mother is the most important role of a woman and the greatest happiness.

Hello! You have very good English written skills! You only made a few small mistakes! :)

The Blue Cross.

-When Valentin was having breakfast he noticed that the sugar was in the salt-cellars (salt-shakers? Sorry if this is right- it could be an American or Australian term- but I've personally never heard it) and the salt in the sugar-basin, and when he asked the waiter why did he did that, the other replied he didn't, that it did was a priest. To Valentin it seemed suspicious so he decided to follow the priests.

-When Father Brown knocked over the apple cart he did it as another track for the three policeman so that they would go on following the tracks. ('tracks' seems like a strange word choice here: 'trail' might be better?)

-The fact that Father Brown had broken the window allows to Valentin to continue with the chase.

-In the sweetshop the lady at the counter tells Flambeau that one of the priests has misplaced a parcel and he later returned claiming it, and asking that it be sent on to an address if found. The shopkeeper says to Valentin that the two priests were headed for Hampstead Heath, and with this information Valentin is capable to continue with the pursuit. (he is 'able to continue' or 'capable of continuing')

-In the park Valentin can closely follow the two priests. Hidden behind the trees he is capable to hear the conversation between them and find out the truth about them.

-The three of them have an objective, for get to achieve it they act in a clever way; Flambeau pretending to be a priest for to steal the parcel, Valentin following the tracks to catch Flambeau, and Father Brown acting as if he didn't know who really was Flambeau really was and what he wanted while he was letting tracks (leaving trails?) that allows Valentin to follow them. They use astuteness and intelligence with the goal of achieving their purpose.

-Father Flambeau is the character I feel I know best because I believe that what he does in the story, pretend be ignorant of the truth, is something that everyone does at least one time in their life; maybe not with the same objective, it's possible that we hide the truth from others to not hurt them, but all of us do it. Father Brown is also one of the characters I like the most. I prefer his character because he doesn't boast about his skills, is patient, and use the acquired knowledge. For example, he use his experience as a priest when he states a reason why he knew Flambeau was not a priest: "You attacked reason. It's bad theology."

-The kind of narrator is a third person who is not involved with the story and is not a character within the story. In this case, the narrator has a subjective narration describing Valentin's thoughts. The narrator's knowledge is limited to that character, it means that the narrator can't describe things unknown to the principal character. The narrator is given detective Valentin's point of view.

Hi! Well done with this! :) Your English is good and understandable! A few of the sentences seemed odd to me, particularly at the start, but as I said, I think some of it might just be because I'm not familiar with the subject!