Solve the exercises and figure out the rules.

Did you call the office? ANSWER Yes, I  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere.
Did Herman speak in German to you? ANSWER Yes, he  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere.
Did they spend the lunch hour together? ANSWER Yes, they  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere.
 didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere your teacher strict? ANSWER Yes, he was.
 didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere you nervous? ANSWER Yes, I  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere.

We use ...

...  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere with adjectives
... did with verbs in  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere
...  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere / A DIFFERENT type of auxiliary to answer a question.

...  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere with the pronouns I HE SHE IT and  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere with WE YOU THEY
... the same ending is used for all  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere verbs, but  didIRREGULARREGULARSIMPLE FORMTHE SAMEWasWas WereWere verbs have different spellings.