In the following sentence, what does the underlined phrase (... — Language Comprehension 2019

Question 268 Language Comprehension 2019 Medium MCQ +4.00 marks · -1.00 negative

In the following sentence, what does the underlined phrase ('reinventing the wheel') mean? A good teacher is one who sees to it that a student does not waste time in reinventing the wheel.

A. waste time on unnecessary details B. repeating oneself C. waste time in imaginary things D. doing something that has already been done

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