Before she became (A) a film star, she has (B) been (C) a stand up (D) comedian
Question: Identify the one underlined word or phrase A, B, C or D that mast be changed for the sentence to be correct.
Before she became (A) a film star, she has (B) been (C) a stand up (D) comedian.
A. became
B. has
C. been
D. stand up