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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

Fill in the gap with the appropriate verb in the following sentence, "Each of the Olympic athletes ___ for months, even years".

A. were training
B. has been training
C. have been training
D. been training
E. had been training
সঠিক উত্তরঃ B. has been training
Explanation: