Question 38: Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions. Sentence 30. She didn’t get a high mark because she had made the classical mistake of having to put the “s” on the verb in the third person singular.
She didn’t get a good score because she made the basic mistake of adding forgetting “s” to the verb in the third person singular.
Classic mistakes: basic mistakes
=> The answer is B (classical → classic)
Other structures to note:
Get high mark: get a high score
Make mistake: make a mistake
Put sth on sth: put something in something