Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
Find the mistake: Economics have been developed quickly since the last few years.
have been developed
Correct answer: GET
Explanation: After the noun indicating the subject name, for example: economics, physics, history… use a singular verb.
The subject of economics has developed rapidly in the past few years.
Edit: have been developed => has been developed