Select the most appropriate word to fill in the blank.
This _______________ a challenging time for us all.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. has been.
The sentence implies that the challenging time began in the past and is still continuing. Hence, has been is correct.
Other options are incorrect because:
was been is not a correct form of any tense.
are isn't correct as the subject (This) is singular and should use a singular verb.
had being is not a correct form of any tense.