How do you say "can you go to the party? " and "who is at the party? " in spanish?

Ithink its b) built underground reservoirs

I'm not sure if you mean for us to translate or to answer. but i'll translate as these are questions for you to answer. 1. how long has it been since you've read a book? . 2. how long has it been since you've eaten breakfast? . 3. how long has it been since you've talked with your spanish professor?