The opening ceremony is to be held in the lecture hall this afternoon, _____ can seat 400 people.
I ______ you for a long time. Where ______ you ______?
Daddy promised me he ______ me a computer A. was bought B. had bought C bought D. would buy
They said they ______ do some sports if it was fine.
He ______ in Shanghai University for four years before he ______ Beijing.
Mary said it was at least five years since he ______ a good drink.