In sharp ________ to John, who is frank, Henry is too sophisticated. a. contrast b. conflict c. comparison d. contradiction

问答题If any man here does not agree with me, he should _______ his own plan for improving the living conditions of these people. a. put on b. put out c. put in d. put forward

问答题A _________ exercise such as running is helpful to our health. a. rigorous b. vigorous c. precious d. continuous