Mr. Smith has two sons, one ofworking as a bus driver.A. themB. whoC. whomD. whose

发布时间：2020-08-15 02:24:19

Mr. Smith has two sons, one of    working as a bus driver.
A. them
B. who
C. whom
D. whose

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(答案→)A. them
B. who
C. whom
D. whose
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