We all jumped with joy at the exciting news, After all, we ______forward to the chance for many years

We’re considering students’ request ______the school cafeteria should provide more kinds of food．

Were you at home at 7:00 yesterday evening I called you but no one was there. —Sorry, we ___________ a movie at the theatre at that time.

Look! Is it Sally playing under the tree —No, it _____ be her. She has gone to Xi’an.

It was in 1990 ______ the medicine was tested on humanpatients.