The old couple had been admitted to university were living a hard life.A. both their chi

问题补充：

The old couple, had been admitted to university, were living a hard life.

A. both their children

B. both of whom children

C. both of whose children

D. whose their children

答案：

A. both their children

B. both of whom children

(答案→)C. both of whose children

D. whose their children

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