Did you tadte the cake,Nancy?Yes,it is good.请问这句话中的is用不用改was?

Did you tadte the cake,Nancy?Yes,it is good.请问这句话中的is用不用改was? Did you surf the Internet? Did you see the doctor? did you climb the hill Did you miss the bus? Did you know the tea为什么用did 提问 you,thees,yes,did,did,on,water,farm,the,I did you enjoy the play?啥意思 did you see the accident h__ Did you see the accidentthis morning?(happen) when did you take the medicine last Did you go to the Great Wall? DId you go to the park by Did you say the same to anyone? how did you feel about the trip? Did you have fun____(watch) the game? Did you have ( )at the party? Did you set the clock?的意思