问题补充：
--- Did you go for the Shanghai Expo?
---- I to, but I decided to stay with my sick mother at the last minute.
A. would intend
B. have intended
C. had intended
D. intended
答案：
A. would intend
B. have intended
(答案→)C. had intended
D. intended
解析：had intended to do sth 本打算做某事实际没做。“你去上海世博会了吗？”“我本打算去但是最后一分钟时我决定和我的生病的妈妈一起留在家中。” 选C
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