Time goes by so fast . We must never miss the chance to show love for our parents and make them _____ how much they mean to us .
____seems very hard to reach the top of the mountains.
─ Is the woman in white our manager? ─ It ________be her. She has just left for Shanghai.
Many children in Britain _______ to have their own bank cards these days.
We have to learn __________ words this term..