问题
选择题
With so much noise of the traffic, I couldn't________and do my research work. [ ]
A. put down
B. settle down
C. break down
D. take down
答案
答案：B
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With so much noise of the traffic, I couldn't________and do my research work. [ ]
A. put down
B. settle down
C. break down
D. take down
答案：B