I ______ go to bed until my father _______back.

Could you tell me _______ there

What do you think of the concert given by the famous Hong Kong singer?　—Not so good．In fact, it _____ to be a great disappointment.

changes have taken place in thatschool It is no longer it was 20years ago,it was so poorly equipped

The old worker insisted that he old, and back to working post again