Помогите пожалуйста, попустила тему и не разумею(

Инфинит.    Прош. вр.          Вопрос                          Отрицание

to dance      I danced             Did I dance?               I didn't dance

to come       I came                 Did I come?                I didn't come

to know       I knew                 Did I know?                I didn't know

to understand    I understood    Did I understand?    I didn't understand

to go            I went                    Did I go?                    I didn't go

to speak      I spoke                  Did I speak?              I didn't speak

to do            I did                       Did I do?                    I didn't do

to think         I thought              Did I think?                I didn't think

to buy          I bought                Did I buy?                 I didn't buy

to drink        I drank                  Did I drink?               I didn't drink

to pay          I paid                    Did I pay?                  I didn't pay

to get           I got                     Did I get?                   I didn't get

to wear        I wore                  Did I wear?                I didn't wear

to stay         I stayed               Did I stay?                  I didn't stay

to eat          I ate                     Did I eat?                    I didn't eat