Select the most appropriate option to fill in blank number 1.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. has been.
- The given blank needs the present perfect continuous tense to refer to an action that began at some time in the past and is still in progress.
- Now, in the option both "has been" and "have been" are present perfect continuous tense forms.
- But "have been" is used for plural subject whereas, "has been" is used for singular subject.
- Therefore, in the given blank, "has been" is the correct phrase as the subject is singular in the sentence.
Hence, the correct answer is Option 2 i.e. has been.