Question

I＿＿＿＿＿＿＿＿you a beautiful present for your birthday,but I was short of money at that time.

1. A.
   would buy
2. B.
   had bought
3. C.
   would like to have bought
4. D.
   must have bought

Answer 1

C
从 but 引导的分句可看出,前一分句是与过去事实相反的假设。