Mark A, B, C, or D to show the word or phrase that needs correcting in the following sentences.

Lawrence Robert Klein received  (A) the 1980 Nobel Prize in economics (B) for pioneering the useful of (C) computers to forecast (D) economic activity.

Suy nghĩ và trả lời câu hỏi trước khi xem đáp án

ATNETWORK
ADMICRO
YOMEDIA
ZUNIA9