单选题
John is
collaborating
with Mary in writing an article
A、
cooperating
B、
marrying
C、
combining
D、
arguing
【正确答案】
A
【答案解析】
collaborate:合作;勾结。cooperate:合作。 She has agreed to cooperate with the police in the investigation她同意在调查中跟警察合作。marry:结婚。combine: 合并。argue:争论。
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