1.) Read the sentence, and then identify its error by selecting the appropriate answer choice. ->Members of the community donated books to the new charter school in the hope that it would be a success.
A) Members of the community
B) books to
C) the hope
D) it would be
E) No error

2.)Read the sentence, and then identify its error by selecting the appropriate answer choice. -> Members of the community donated books to the new charter school in the hope that they would be a success.
A) Members of the community donated books
B) in
C) the hope
D) they would
E) no error

3.) Read the sentence, and decide whether the underlined portion contains a mistake.-> Exercising, studying, and to socialize take up the majority of Liz's time these days.
A) Exercising, studying, and also to be social
B) Exercising, studying, and socializing
C) To exercise, to study, and to socialize
D) Exercising, to study, and to be social
E) No improvement or correction is required.

4.) Read the sentence, and decide whether the underlined portion contains a mistake.-> To do some yoga is a fantastic way to build body muscle while also relaxing.
A) Yoga performance
B) Yoga
C) The doing of yoga
D) Participation in yoga
E) No improvement or correction is required.

In the first question, letter A is incorrect because it is the same as in the original sentence; B is also correct since the books were donated to and object and not for something. C is also incorrect because the article the doesn't affect the meaning of the sentence; D is incorrect because it refers to the action of donating books. So, no error in this sentence.

In the second question, the correct answer is D because they is a plural object but is in reference to the act of the donation, so it must be it would.

In number three, the sentence uses a parallel structure or parallelism, which refers to the use of the same patter of words. In the sentence, the first two words are gerunds (verbs+ing that describe/name an action) and then an infinitive. A way to improve the sentence would be Exercising, studying, and socializing.

In number 4, the subject is an infinitive (to do) and since this type of words can serve as a subject to, no improvement or correction is required.