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Câu hỏi:

21/07/2024 2,491

At times, this can be risky, and the keepers have been injured and one has been killed.

A. good

B. useful

C. healthy

D. secure

Đáp án chính xác

Trả lời:

verified Giải bởi Vietjack

Đáp án D

risky: mạo hiểm >< secure: an toàn

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