I told Sally how to get here,but perhaps I ______ for her.A.had to write it out B.must have written it outC.should have written it out D.ought to write it out谁能解说下为什么不选D.

问题描述:

I told Sally how to get here,but perhaps I ______ for her.
A.had to write it out B.must have written it out
C.should have written it out D.ought to write it out
谁能解说下为什么不选D.

should have written it out
过去时