Explanation for Question 43 From the Writing Section on the 2017 May Sat
For question 43, we want to choose the correct version of the underlying word, 2 which is help. Um, 3 there's two things that this question, 4 um, kind of considers and that's whether the nouns should 5 be, or the verb should be singular or plural. 6 And then also what tends to it should be in. 7 So the sentence says examination of full grades around the varied 8 power systems, help scientists determine. 9 So we have the word examinations examination without an S that's 10 our numb, um, that's, 11 what's helping the scientists determine the most effective shielding materials for power 12 lines. So except management is singular right off about, 13 we can knock out B because that is plural have 14 helped. Um, 15 it's blur because HASC would be singular. 16 So we have help are helping and is helping again 17 C also plural are helping, 18 if it was singular, B is helping like D so we're stuck between help 19 or is helping, um, 20 help would be matched with a plural noun. 21 Um, you could think about she helps or they help. 22 She helps if it's singular needs an S right there, 23 um, they help it's plural. 24 It doesn't need an S so we are, 25 um, stuck with D which is helping, 26 but let's just make sure that's correct. That's think about it. 27 It's singular because of the word is so we're good on that regard and 28 then is helping is in the present and, 29 um, carries along, 30 right? Like it's happening and it's still it's happening in the moment. 31 Um, the examination is happening right now, 32 and it's continuing to help, um, 33 scientists determine the most effective shelling materials for power lines. 34 So it makes sense. So our right answer is deep is helping.