In my opinion the idea of a family is much narrower than .A. that used to beB. it used to

问题补充：

In my opinion, the idea of a family is much narrower than .

A. that used to be

B. it used to

C. it was used to

D. it used to be

答案：

A. that used to be

B. it used to

C. it was used to

(答案→)D. it used to be

解析：句意：依我看来，现在家庭的观念要比过去狭隘。这里是“现在的家庭观念”和“过去的家庭观念”作比较，it used to be表示过去常常，选D。