问题
选择题
---Would you have helped her had it been possible?
---Yes, but I __________ busy with my work.
A．was
B．had been
C．have been
D．am
答案
答案：A
本题考查时态。根据句意可知，我在忙于我的工作，陈述的过去的事实，故用一般过去时。句意：——如果有可能你会帮助她么？——好的，但我工作很忙。