Unluckily,I__in the English exam again.A.fail B.has faild C.am failing D.failed为什么选D?

问题描述:

Unluckily,I__in the English exam again.A.fail B.has faild C.am failing D.failed为什么选D?

过去时态嘛,again表示再一次,那肯定是用过去时的.