NeitherJimnorhiscousins

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Neither Jim nor his cousins _______to America, but _____of them know the country very well. (07年潍坊市)

A．have been；a11 B. have been; both C has been; all D．has been; both

解析：考查neither．．．nor的用法，以及both与all的区别。neither…nor连接两个主语时，谓语用“就近原则”，cousins是复数，谓语用have been，排除C和D项；指两者用both。