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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Trả lời câu hỏi dưới đây:For the last ten years, engineers _______noise levels in Britain’s cities.

Mark the letter A, B, C, or D on your answer s

Câu hỏi

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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Trả lời câu hỏi dưới đây:

For the last ten years, engineers _______noise levels in Britain’s cities.


A.
have been measured
B.
have been measuring
C.
has measured
D.
have been measurement
Đáp án đúng: B

Lời giải của Luyện Tập 365

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