问题
选择题
Jennifer is always absent from school, ________ I suppose is why she is blamed now and then.
A．which
B．who
C．that
D．what
答案
答案：A
A 考察定语从句。逗号后面的句子是非限制性定语从句，修饰整个这句话的内容，在从句中做主语，故A正确。I suppose是插入语，可以省略。
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