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Câu hỏi:

13/07/2024 1,522

What we know about certain diseases are still not sufficient to prevent them from spreading easily among the population.

A. What we know

B. are

Đáp án chính xác

C. from spreading

D. among

Trả lời:

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Đáp án B thành “is”

Giải thích: Chủ ngữ của câu là “What we know …” (ngôi 3 số ít) nên tobe là “is”

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