Hepburn’s acting years, she insisted working closely with UNICEF. A. Though, toB. Through

Hepburn’s acting years, she insisted working closely with UNICEF.
A. Though, to
B. Throughout, to
C. Throughout, on
D. Throughout, onto

A. Though, toB. Throughout, to(答案→)C. Throughout, onD. Throughout, onto解析：though 尽管；throughout贯穿；to到；on在……上面；onto在……之上。句意：在赫本的演艺整个年代，他坚持和儿童基金会紧密合作。Insist on doing 坚持做，故选C。

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