. There are a group of foreign visitors in our school this term are from the UK.A. three

问题补充：

. There are a group of foreign visitors in our school this term, are from the UK.

A. three of whom they

B. three of whom

C. three of them

D. who of three

答案：

A. three of whom they

(答案→)B. three of whom

C. three of them

D. who of three

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