Which sentence has a verb tense error?

a. until you read the book, you will never understand what the hype is all about.
b. your final presentations for the science fair will be due last friday morning.
c. if you wanted to go to the concert, you should have tried to get tickets as soon as they went on sale.
d. i was so inspired when i got to go back into chef daniel's kitchen and watch him create some of his famous dishes.