Tom was a happy childhood, most people would like to have.
A. filled with; one
B. blessed with; one
C. covered with; which
D. laden with; which
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A. filled with; one
(答案→)B. blessed with; one
C. covered with; which
D. laden with; which
解析：考查固定词组和同位语用法。be blessed with…幸运地拥有；第二空的one与a happy childhood构成同位语关系，都表示泛指。句意;Tom幸运地拥有了一个幸福的童年，一个很多人都想拥有的童年。故B正确。