She ______ the homework yesterday.A.didn't do B.didn't C.doesn't D.doesn't do

问题描述:

She ______ the homework yesterday.A.didn't do B.didn't C.doesn't D.doesn't do

选A,是过去式
望采纳。谢谢

A.didn't do

选A
yesterday为过去式
用did+原形do

a

A yesterday昨天所以用一般过去时.做作业do homework.所以借助于助动词do的一般过去时did.