问题补充：
I’m really sorry, Lucy. I to help you, but I was too busy at that time.
A. meant
B. mean
C. had meant
D. have meant
答案：
A. meant
B. mean
(答案→)C. had meant
D. have meant
解析：考查had meant to do表示虚拟语气：句意：很抱歉，露西，我本打算帮你的，但那时我太忙了。用had meant to do表示本打算做…却没做…,也可以是meant to have done。选C。
