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NYLON...IN THE 1930'SA. INVENTED B. IS INVENTED C....
NYLON...IN THE 1930'SA. INVENTED B. IS INVENTED C. WAS INVENTED D....
DE KIEM TRA E 10 HAY
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6/ Nylon...in the 1930's
A. invented B. is invented C. was invented D. has been invented
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DE KIEM TRA E 10 HAY