[Video] Q28: No change or are requiring or have required or require

Explanation for Question 28 From the Writing Section on the Official Sat Practice Test 4

Now here in number 28, we're trying to decide on what form of the 2 verb require we want to use. 3 And so looking at our sentence, it says not all research into regional English 4 varieties requires such time, effort and resources, 5 however right. And so first thing we want to do is think about what 6 our subject is, right? Cause this is really a subject verb agreement question. 7 And so when we look for a subject, we need to know that the 8 subject is whatever is actually doing the verb. 9 So our question here is what requires the time and effort. 10 Um, and in this case, it's going to be the research, 11 right? We know it's the research that requires the time and effort. 12 It's not the English varieties and it's not regional. 13 And the reason it's not, those is because of this word into, 14 is what we call a preposition. 15 That it's part of speech. And so what goes from a preposition to the 16 verb is what we call a preposition phrase. 17 So that's everything I've crossed out here as a prep positional phrase, 18 and why it's important to recognize these prepositions and prepositional phrases is 19 because whatever is within that propositional phrase is not allowed to be your subject, 20 right? So none of this is allowed to be my subject. 21 And that really reveres reveals to me that it's the research. 22 That's my subject and research is singular, 23 which shows me that I want a singular verb. 24 Right? So verbs, that would go with the word. It it's requires. 25 Sounds good. Requires as a singular verb, 26 um, it's are requiring shouldn't make sense, 27 right? It would have had to say it is requiring it's 28 have requiring shouldn't make sense. 29 It would have had to say has so C and B are also plural 30 verbs and it's required. 31 Isn't going to work because require is the plural version of to require. 32 And so the only form of the verb here that's in singular form is 33 an answer choice, a.