Frequently single-parent children take on some of the functions that the absent adult in t
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Frequently single-parent children take on some of the functions that the absent adult in the house______.
A.has served
B.would have served
C.serves
D.must serve
请帮忙给出正确答案和分析,谢谢!
更新中~-
正确答案:B
句意为:"单亲家庭的孩子往往要承担一些工作,而这些工作恰是家庭中所缺少的父亲或母亲应承担的。"句子是一个含蓄虚拟语气句,single—parentchildren"单亲家庭的孩子",说明没有父亲或没有母亲,thefunctionsthattheabsentadultinthehousewouldhaveserved,暗含如果父亲或母亲在的话,这些事情是由他们做的,但事实上是孩子们做的,所以动词要用虚拟形式。
