When we were young every evening my brother and I stay at home waiting for our mother.A.

问题补充：

When we were young, every evening my brother and I stay at home waiting for our mother.

A. would

B. might

C. should

D. could

答案：

(答案→)A. would

B. might

C. should

D. could

解析：考查情态动词，would过去常常，might 可能，should 应该，could能，会，句意：当我们小的时候，每天晚上，我的哥哥和我经常呆在家里等我们的母亲。所以选A。