Choose the best answer A, B, C or D to complete the sentence. Question 11: Air pollution, together with littering has _______many problems in our big cities today. A: bought B: caused C: affected D: made

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Question 11: Air pollution, together with littering has _______many problems in our big cities today.

A: bought B: caused C: affected D: made

caused

nghĩa là ô nhiếm kk kéo theo nhiều thứ khác

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