Did you go to her birthday party held the day before yesterday?I but something u

问题补充：

--- Did you go to her birthday party held the day before yesterday?

--- I , but something unexpected happened at my home.

A. intended

B. had intended to

C. had intended to go

D. intended to go

答案：

A. intended

(答案→)B. had intended to

C. had intended to go

D. intended to go

解析：考察虚拟语气同时考察不定式的省略。Had intended to do sth本打算做某事；根据后半句的过去时可知是与过去事实相反的虚拟语气。结合句意可知B正确。同时不定式省略时，可以省略后面的do,只保留不定式符号to.故B正确。