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Đáp án B
Giải thích:
A. period (n): giai đoạn
B. duty (n): nhiệm vụ, bổn phận
C. arrangement (n): sự sắp xếp
D. activity (n): hoạt động
Tạm dịch: Một số người cảm thấy đó là bổn phận đạo đức của họ khi giúp đỡ người nghèo.
Chọn B.Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
After it had been ___________ the air for only two months, the series was cancelled.
To grow well, a tree must be well-suited to the area where it was planted.
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
The mayor's recommendation that ___________ was approved by the city council.
