His speech was heard by a group of five judges all ofagreed that it was the best. A. who

问题补充：

His speech was heard by a group of five judges , all ofagreed that it was the best.

A. whom

B. who

C. them

D. that

答案：

(答案→)A. whom

B. who

C. them

D. that

解析：考查定语从句。本题定语从句的先行词是judges，whom指代先行词作为of的宾语。C项不是关系词；that不能放在介词的后面；who通常只作主语。故A正确。