This question tests the correct sequence of tenses when one past action happens before another past action, using the past perfect tense. Let's look at each option.
Option D is the only one where all three verbs sit in the correct time order: the past perfect "had left" for the earliest event, and simple past "boarded" and "realized" for the two events that follow it.
So, the correct answer is As soon as I boarded the train, I realized that I had left my wallet at home.
All four options describe the same short story, boarding a train and then realizing something about a wallet, so instead of reading each one from scratch, it helps to line them up side by side and find exactly where each one departs from the others. Three small differences separate the four sentences: the tense of "realize/realized," the tense of "left/leave/had left," and whether "my" appears before "wallet." Checking each option against these three points shows which one gets every point right.
Lining the options up and checking them point by point shows that only option D gets the tense sequence and the possessive right at every single point of difference.
So, the correct answer is As soon as I boarded the train, I realized that I had left my wallet at home.
In the question, there are five sentences. Each sentence has pairs of words/phrases that are
italicized and highlighted. From the italicized and highlighted word(s)/phrase(s), select the
most appropriate word(s)/phrase(s) to form correct sentences. Then, from the options given,
choose the best one.
The further [A]/farther [B] he pushed himself, the more disillusioned he grew.
For the crowd it was more of a historical [A]/historic [B] event; for their leader it was just another day.
The old has a healthy distrust [A]/mistrust [B] for all new technology.
The film is based on a worthy [A]/true [B] story.
She coughed discreetly [A]/discretely [B] to announce her presence.
In the question, there are five sentences. Each sentence has pairs of words/phrases that are italicized and highlighted. From the italicized and highlighted word(s)/phrase(s), select the most appropriate word(s)/phrase(s) to form correct sentences. Then, from the options given, choose the best one.
\(\textit{Regrettably}\) [A]/\(\textit{Regretfully}\) [B] I have to decline your invitation.
The critics \(\textit{censored}\) [A]/\(\textit{censured}\) [B] the new movie because of its social unacceptability.
He was \(\textit{besides}\) [A]/\(\textit{beside}\) [B] himself when I told him what I had done.
Anita had a beautiful \(\textit{broach}\) [A]/\(\textit{brooch}\) [B] on the lapel of her jacket.
He has the same capacity as an adult to \(\textit{consent}\) [A]/\(\textit{assent}\) [B] to surgical treatment.
In the question, there are five sentences. Each sentence has pairs of words/phrases that are italicized and highlighted. From the italicized and highlighted word(s)/phrase(s), select the most appropriate word(s)/phrase(s) to form correct sentences. Then, from the options given, choose the best one.
The prisoner's \(\textit{internment}\) [A]/\(\textit{interment}\) [B] came to an end with his early release.
She managed to bite back the \(\textit{ironic}\) [A]/\(\textit{caustic}\) [B] retort on the tip of her tongue.
Jeans that \(\textit{flair}\) [A]/\(\textit{flare}\) [B] at the bottom are in fashion these days.
They heard the bells \(\textit{peeling}\) [A]/\(\textit{pealing}\) [B] far and wide.
The students \(\textit{baited}\) [A]/\(\textit{bated}\) [B] the instructor with irrelevant questions.