The old lady, _________ had been killed in the war, was given help by the government.
问题描述：
The old lady, _________ had been killed in the war, was given help by the government.
是选择题
A、 all her children
B、 all of her children
C、 all of whose children
D、 whose all children
请说明理由.
答
选c
这是非限制性定语从句,引导非限制性定语从句只能用which,who and whose,all of修饰which