The children, had played the whole day long, were worn out.
A. allofwhat
B. allofwhich
C. allofthem
D. allofwhom
网友回答
A. allofwhat
B. allofwhich
C. allofthem
(答案→)D. allofwhom
解析：句意：玩了一整天的孩子们都累坏了。这是非限制性定语从句，关系代词the children，定语从句中应该是all of the children had played the whole day long所以用不定代词all+of+whom引导非限制性定语从句。选D。