There are many mistakes here, mostly of usage. I will address the major problems here.
First sentence:
a teen have benn victim of a short missed ,then he tried to kill his agressor,he had a feud with the two boys.
Let's correct the spelling first:
A teen have been victim of a shot missed, then he tried to kill his aggressor, he had a feud with the two boys.
Here,
have been does not agrees with the subject. In order to agree with the 3rd person singular noun
teen,
have been must become
has been.
A teen has been victim of a shot missed, then he tried to kill his aggressor, he had a feud with the two boys.
Now let's look at the tone of the sentence. When you use a
construction like has been, you are usually talking about some past
event--you really are not concerned with the event itself, just that it
has happened. Here, however, you are describing a specific
event. You will want to point to that past event with a verb in
the simple past (we'll add the proper article, a, for good measure:
A teen was a victim of a shot missed, then he tried to kill his aggressor, he had a feud with the two boys.
Now you have a complete sentence up to the underlined
portion. The underlined portion should be a separate sentence
because it is a separat thought and includes its own
subject and
predicate:
A teen was a victim of a shot [that] missed, then he tried to kill his aggressor, He had a feud with the two boys.
These sentences are now complete and correct.
Here is the rest with the errors underlined:
For the principal who try to make her life bettter , the solution isn't
it police but more discussion, help and hope.she says that apathy and
rage are the enemies of children not knives an guns
And corrected for spelling, verb tense and agreement, and usage:
For the principal who (tries / is trying) to make her life better,
the solution isn't [more] police, but more discussion, help, and
hope. She says that apathy and
rage are the enemies of children, not knives and guns.
To may want to look at your other compositions in the same way.
Don't look at the work as a whole, but separate the parts of the task
of correction and perform each task separately (correct the spelling,
then correct verb tense, etc.)
C