Mark the letter A, B, C, or D on your answer sheet to indicate the cor

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.    

One of my neighbours ____ inquisitive about other people’s private life.

• A. A. being
• B. B. were
• C. C. is
• D. D. been

One of + N => động từ chia số ít
=> C