Identify the error in each sentence: There are a number of (A) reason why population (B) is concentrated in temperate regions, but the wide variety and (C) availability of animal and vegetable life may be (D) the most important.

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

ATNETWORK
ADMICRO
YOMEDIA
ZUNIA9