Question

Complete the given statement using the most appropriate option given below:

Sarah is very tired. She ____________ (work) very hard recently.

• A. is working
  
• B. had worked
  
• C. has been working
  
• D. will work
  

Answer 1

The correct option is C has been working

The present perfect continuous tense (also known as the present perfect progressive tense) shows that something started in the past and is continuing at the present time. Here the action of 'working' is continuing to the present time. The present perfect continuous is formed using the construction has/have been + the present participle (root verb + -ing). Hence, Option C is correct.

The rest of the options either indicate that the action has already happened (Option B) or is a continuous action started in the present (Option A), or will happen in the near future (Option D). Hence these options are incorrect.