My sister cut herself and so did your sister.

My brother cleaned his shoes before going to bed and so did his brother.

Neither Peter nor I knew about it.

Neither the manager not his companions were surprised.

Neither you not the other students touched the bag.

We had our lunch at home and so did Sally.

Neither the students not the teachers can leave yet.

Neither her horse not mine will jump over the river. 

We have a new car and so does Mr. Brown.

The driver shouted and so did I.

You ought to come and so ought your parents.

IV

1, didn’t 

2, did

3, doesn’t 

4, does 

5, don’t 

6, does

7, did

8, doesn’t