1 . Each sentence has four underlined parts having words or phrases marked a, b, c, d, identify one of the underlined parts that must be changed to make the sentence correct: I certainly (a) appreciate him (b) telling(c)  us about the delay in delivering(d ) the materials because we had planned to begin work tomorrow

• A. a
• B. b
• C. c
• D. d

Answer: Option B

Explanation: