Câu hỏi:

19/07/2024 120

Thus far, close to 130 nations have contributed personnel (21)_____various times; 119 are currently providing peacekeepers


A. on



B. at


Đáp án chính xác


C. by



D. in


Trả lời:

verified Giải bởi Vietjack

Đáp án đúng: B

Giải thích: at various time: trong một vài thời điểm nhất định

Dịch: gần 130 quốc gia đã đóng góp nhân sự vào các thời điểm khác nhau

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