问题
选择题
The two countries used to be ________ war with each other, but now they are ________ peace. [ ]
A. at; in
B. in; at
C. at; at
D. in; in
答案
答案：C
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The two countries used to be ________ war with each other, but now they are ________ peace. [ ]
A. at; in
B. in; at
C. at; at
D. in; in
答案：C