ok i'm having problems spotting grammatical errors in these sentences

1. Sylvia's desire work with horses is fed by a deep love for these creatures.
2. She is captivated by its beauty, strength, and spirit.
3. The horse, Beauty, taught Sylvia that horses have deep relationships with others, even humans.
4. That relationship has continued to impress me and others for years.

i'm suppose to use either Verb-Tense error, Subject-Verb agreement, Homophone, Pronoun error, adjective error or adverb error.

thanks a bunch
i kind of need it by tomorrow

1. Sylvia's desire to work with horses is fed by a deep love for these creatures
2. She is captivated by it's beauty, strength, and spirit.
3. This is tricky I'll come back.
4. That relationship has continued to impress others and I for years.

There you go, doll.

There may be more those are just the super obvious ones

^I think of it differently, however.
1. agree with above
2. "it's" is wrong..."its" is supposed to be right, it is showing posessions (reference: http://www.cgl.uwaterloo.ca/~csk/its.html), so that must be "its," but currently I see nothing wrong with this sentence, I might have to figure it out later.
3. i believe verb consistency is a problem. "taught" is past tense and "have" is present tense.
4. it's "others and me," not "I."

thanks a bunch

#2 and #4 are wrong. "Its" is correct (showing possession, as noted above), and "me" is also correct.

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I think #4 should be phrased as:
That relationship continued to impress me and others for years.
I don't know if you can change it by that much, but that would be correct. The error seems to be in the "has continued". There's a weird tension between past and present tense there.

#1 is obviously missing the word "to", but I think that might just be a typo on your part. I'm not sure of a good correction, though. I feel like changing "these" to "those" might be a better wording, but I don't know if that's the answer in this case.

1. Sylvia's desire to work with horses is fed by a deep love for these creatures.
2. She is captivated by its their beauty, strength and spirit. (remove comma after strength)
3. The horse, Beauty, taught Sylvia that horses have had deep relationships with others, even humans.
4. That relationship has had continued to impress me and others for years.

1. Obviously missing a word.
2. No error, but you could remove the comma. If it is a continuation of the first sentence, 'its' should be changed to 'their'.
3. 'Taught' is past tense, so have should also be past tense.
4. 'Continued' is past tense, so 'has' should be past tense.

I think #3 can stay as "have relationships" with others, as such relationships continue in the present, even though the horse taught Sylvia that in the past.