27．Many students were watching the story of the heroes from Changjiang University on TV

问题补充：

27．Many students were watching the story of the heroes from Changjiang University on TV, moved to tears.

A. all of them

B. all of whom

C. all of that

D. all of which

答案：

(答案→)A. all of them

B. all of whom

C. all of that

D. all of which

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