Charles Smith, ______ was my former teacher, retired last year.【单选题】

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Charles Smith, ______ was my former teacher, retired last year.

A. which

B. who

C. that

D. as

参考答案:

B

that 不能引导非限制性定语从句 , 可以用 which 和 who 引导 , 其中 , who 代替的先行词是人。句意为:查理 ?史密斯去年退休了 ,他曾经是我的老师。

英语考试