In question below fill the gap with the appropriate option:
A survey of opinions on how pupils feels about their teachers _____ carried out
Answer Details
The correct option to fill the blank is "has been."
The subject of the sentence is "survey," which is singular. Therefore, the verb that follows should also be singular. "Has been" is the correct form of the verb to agree with the singular subject "survey."
So the correct sentence would be: "A survey of opinions on how pupils feel about their teachers has been carried out." This means that the survey has already been completed, and the results are available.