those of us who are over fifty years old should get ----blood pressure checked regularly.
问题描述：
those of us who are over fifty years old should get ----blood pressure checked regularly.
those of us who are over fifty years old should get ----blood pressure checked regularly.答案为our.为什么不是their?
答
因为前面的主语是 those of us 我们当中的那些人
那么检查的也必定是我们的血压 所以不能用their,只能用 our