Question

虚拟语气题，大家帮帮忙。

Had I had time,I_you,but I_really occupied the whole week.
A.would help;had been B.would have helped;was C.helped;have been D.should have helped;must be
答案选c 为什么？
第一个空是怎么选出来的，为什么用过去式，句子成分又是怎样的呢

Answer 1

应该选C。
Had i had time ,原句是If I had dad time ,是过去完成时，所以主句应用should
或者是would+完成时，表示本应做而没做。第二个选项应用过去时。must be 表示的是必须，意思不对。