The kind-hearted couple decided to adopt the boy parents had been killed in an accident.A

发布时间：2020-08-17 11:52:19

The kind-hearted couple decided to adopt the boy      parents had been killed in an accident.
A. of whom
B. with whom
C. on whom
D. in whose

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(答案→)A. of whom
B. with whom
C. on whom
D. in whose
解析：考查介词与关系词引导的定语从句。先行词the boy与parents之间是从属关系，因此选择A项。
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