There are altogether fifty-four students in our class is a new comer from a faraway mou

问题补充：

There are altogether fifty-four students in our class, is a new comer from a faraway

mountain village.

A. the most diligent of who

B. but the most diligent of whom

C. the most diligent of them

D. of whom the most diligent

答案：

A. the most diligent of who

B. but the most diligent of whom

C. the most diligent of them

(答案→)D. of whom the most diligent

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