I don't speak Chinese. (disagree)

1.   ?    Neither do I
2.   ?    So do I
3.   ?    I do

I can play the flute. (agree)

1.   ?    So can I
2.   ?    Neither can I
3.   ?    I can

I've got a good computer. (agree)

1.   ?    So have I
2.   ?    I don't
3.   ?    I have

I'm tired. (agree)

1.   ?    Neither I am
2.   ?    So am I
3.   ?    So I am

I didn't visit the museum. (agree)

1.   ?    I not
2.   ?    I did
3.   ?    Neither did I

I was studying. (disagree)

1.   ?    I wasn't
2.   ?    Neither was I
3.   ?    So was I