If Peter had told his teacher about his difficulty in math homework,she____him before the exam.
A、helps
B、will help
C、would have helped
D、would help
Directions:In each of the following groups of words, there are four underlined letters or ltter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet