John is collaborating with mary in writing an article.

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John is collaborating with mary in writing an article.

A.cooperating

B.competing

C.combining

D.arguing

参考答案:

A解析:本题考查的是对动词的辨析。这句话的意思是:约翰与玛丽合作写一篇文章。本题考察对动词的掌握。A.cooperating合作;B.competing竞争;C.combining合并;D.arguing争论。句中collaborate是合作、勾结的意思。本句时态是现在进行时,动词应用其现在分词形式,因此选A.cooperating。例如:She has agreed to cooperate with the police in the investigation.她同意在调查中跟警察合作。