Mark the letter A B C or D on your answer sheet to indicate
Câu hỏi
Nhận biếtMark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Police are warning the public to be on the _______ for suspicious packages.
Đáp án đúng: B
Lời giải của Tự Học 365
Đáp án B.
Ta có: to be on the alert against /for sth: cảnh giác về điều gì
Dịch: Cảnh sát báo cho công chúng biết cần cảnh giác với các gói đáng ngờ.
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