I. Vocabulary There are 18 questions in this part of the test. For each question, there are four possible answers—( A ), ( B ), ( C ) or ( D ). Choose the one that is most similar in meaning to the underlined word in the sentence. 
1.At first the physics class was not happy with the substitute when their regular teacher, Dr. Burley, was ill, but eventually they came to respect him.
(A)replacement
(B)teacher
(C)physician
(D)lecture