A group of Chinese guests who are the first from the new agreement on tourism between Ch

问题补充：

A group of Chinese guests, who are the first from the new agreement on tourism between China and Switzerland, were given a warm welcome in Geneva(日内瓦) last Saturday.

A. benefited

B. benefiting

C. to be benefited

D. to benefit

答案：

A. benefited

B. benefiting

C. to be benefited

(答案→)D. to benefit

解析：考查不定式做定语：当名词被序数词，最高级修饰的时候，往往用不定式做定语，句意：一群最先受益于中国和瑞士之间旅游新协议的中国客人, 上周六在日内瓦受到了热情的欢迎。选D。