I didn‘t know the answer and( ).A.so did he B.he did,either C.nor did he D.neither he did

I didn‘t know the answer and( ).A.so did he B.he did,either C.nor did he D.neither he did
I didn‘t know the answer and( ).
A.so did he B.he did,either C.nor did he D.neither he did

I didn‘t know the answer and( ).A.so did he B.he did,either C.nor did he D.neither he did
C否定句省略表示相同用Nor 然后倒装省略谓语
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D。。。曾经做过。。忘记了

选c吧 否定用nor 是过去嘛就是did

本句是过去式的否定句，表示他也不知道，要选否定的，过去的。只能从答案c、d中备选。
答案为c，否定的强调需要倒装。只要记住就可以了。
nor和neither这里都可以用,d错了只是因为没有倒装