Is there a primary school in your village now?- No but there.A. used B. didC. used

问题补充：

--- Is there a primary school in your village now? --- No but there.

A. used

B. did

C. used to

D. used to be

答案：

A. used

B. did

C. used to

(答案→)D. used to be

解析：考查省略。used to do过去做。there used to be = there used to be a primary school。句意：现在你们村那儿有一所小学吗？——没有，但那儿过去有。