For the last ten years, engineers _______noise levels in Britain’s cities.
Câu hỏi
Nhận biếtFor 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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