22 Many of the test questions are so difficult that no student should feel ashamed of not knowing the answers.
(A)The students should not feel ashamed if they failed to answer some difficult test questions correctly.
(B)The students should feel ashamed if they cannot answer the difficult test questions.
(C)The students should know the answers to many of the difficult questions on this test.
(D)No student would do well on the test because many of the questions are very difficult.