—Where were you at ten o’clock this morning?—I ________ with my friends in the park at that time.

 We didn’t go out because it ________ heavily last night. 

Many doctors and scientists are working hard on curing AIDS. We hope AIDS _____ one day.

 He is very surprised that all the houses in the village ______ white.

--Did you borrow the book from the library ? ---Yes. I _______ it for three days. I’ll return it this afternoon.