John is collaborating with Mary in writin

John is cooperating with Mary in writing an article.A.working forB.working outC.working in

In "Pocahontas" John Smith is in love with an Indian（).A、farmerB、princessC、ma

John is collaborating with Mary in writing

Mr. Smith is collaborating with Johnson i

John is collaborating with Mary in writing

John is collaborating with Mary in writin