Question

A) NO CHANGE B) have been C) will be D) had been

   A) NO CHANGE
B) have been
C) will be
D) had been

Instant Answer

Solved by Expert Brenda Sanchez

03/10/2021

Step 1

In this case, the tense is present perfect as indicated by the phrase "have shown". Show more…

Show all steps

lock

Thanks for your feedback!

A) NO CHANGE B) have been C) will be D) had been

Play audio

Feedback

Powered by NumerAI

Brenda Sanchez and 62 other educators are ready to help you.

Ask a new question

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Auxiliary Verbs

Auxiliary verbs, often called helping verbs, work with main verbs to form various tenses, moods, and aspects. They are crucial for constructing verb phrases in English, such as in the present perfect, past perfect, or future forms, allowing speakers and writers to precisely express the timing and nature of an action.

Contextual Clues and Sequence of Events

Choosing the appropriate verb form depends on understanding the context and the sequence of events described in a sentence. This involves analyzing the surrounding narrative or argument to determine whether an action is completed, ongoing, or expected to occur in the future. Recognizing these clues is key to maintaining clarity and ensuring grammatical correctness.

Verb Tense

Verb tense is a fundamental concept in grammar that indicates the time at which an action or state occurs. Understanding different tenses, such as past, present, and future, is essential for correctly conveying the sequence and timing of events. It helps readers or listeners understand when actions happened, are happening, or will happen.

Recommended Videos

Transcript

Ace is your personal tutor. It breaks down any question with clear steps so you can learn.

Start Using Ace

Continue solving this problem

Create a free account to:

View full step-by-step solution
Ask follow-up questions with Ace AI
Save progress and study later