31.Thank you.Without your help,we ___ our goal.

问题描述:

31.Thank you.Without your help,we ___ our goal.
a.will not reach
b.have not reached
c.wouldn't reach
d.wouldn't have reached
选什么,怎么分析的,为什么不选其他的?

d,动作已完成,用完成时;条件句,用将来时.