问题
选择题
At the meeting, Doctor Li thought of lots of ways to solve the air pollution.[ ]
A. paid attention to
B. put up with
C. catch up with
D. came up with
答案
答案：D
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At the meeting, Doctor Li thought of lots of ways to solve the air pollution.[ ]
A. paid attention to
B. put up with
C. catch up with
D. came up with
答案：D