My mother, is a doctor, is very kind.[ ]A. that B. who C. whom D. she
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My mother, _______ is a doctor, is very kind.
[ ]
A. that B. who C. whom D. she
试题答案
答案：B
My mother, _______ is a doctor, is very kind.
[ ]
A. that B. who C. whom D. she
答案：B