Read through the original sentence, listening for errors. Then quickly check the underlined portions against the Big 8 Grammar Rules. Identify and mark any error you find. There will only be one error, but be sure to check each part of the sentence to make sure that you are not simply revising a portion that is technically correct.
it is not a fast runner, can maintain a loping run for many miles, throughout the night .
(A) When the word “although” is used at the beginning of the sentence, it signals that a dependent clause is coming. This means that there should be a comma after the first portion of the sentence. This comma is present, so there is no error.
(B) Right after an introductory phrase or a clause that only uses a pronoun, you should find the subject of the sentence. “Wolves” is the subject of the sentence, but it does not match the pronoun used in the first portion of the sentence. The word “it” is singular, while the word “wolves” is plural. Mark this error by changing the word “wolves” to “a wolf,” and quickly check the remaining answer choices.
(C) When you see “-ing” on the end of a verb, check to make sure that it makes sense in context. In this case, it does make sense to use “running” rather than another form because it emphasizes the continuous action of the wolf throughout the night.
(D) Think of the words “if necessary” as modifying the phrase “running throughout the night.” You could leave them out, but they give us extra information by letting us know that wolves don’t normally run all night. Remember, you are not looking for things that you could change; you are looking for specific errors.
(E) This cannot be the correct answer because you have already indentified an error.
The correct answer is (B).