Choose from the options lettered A - E the one that most appropriately completes each sentence The students mainly ..............to school in the past

Analyze the question: The sentence is "The students mainly ........ to school in the past." We need the verb form that fits the time phrase "in the past" and agrees with the plural subject "the students".

Concept: The phrase "in the past" signals a completed, habitual action that happened long ago. For this we use the simple past tense (e.g., walked). Present tenses, such as "are walking", "walk" and "walks", clash with a past-time marker. The present perfect ("have walked") links the past to the present and doesn't fit when the time is clearly over ("in the past").

Step-by-step solution:

1. Subject: "The students" is plural.
2. Time marker: "in the past" means the action is finished, so we need the simple past.
3. Check each option: • A. are walking is present continuous, so it is wrong. • B. have walked is present perfect, which doesn't suit "in the past" as a finished time, so it is wrong. • C. walk is simple present, so it is wrong. • D. walked is simple past and fits the time marker, so it is correct. • E. walks is singular present, which does not agree with the plural subject and is also the wrong tense, so it is wrong.

Correct sentence: "The students mainly walked to school in the past."

Exam tip: Look for time expressions such as in the past, yesterday, last year, long ago. They almost always point to the simple past tense. Likewise, now, at the moment point to the present continuous, and since, for, already often point to the present perfect.