有读者问这样一道选择题：
(1)_____ every day, he had to spend a little time reading books.
A. Although busy he was
B. Because he was very busy
C. However busy he was
D. So busy was he
答案是C，但我觉得讲不通，因为had to意为“不得不”。你的看法呢？
had to在此不强调“不得不”，而是意为“需要”（并有“做到了”的含义），再如：
(2)Then he had to sit down because he felt dizzy. （had to≠不得不，而是“需要”的意思）。
由此可见，答案C是对的。
