I am really worried about his grades in the coming test because of the little use he ______ of his spare time before it.
China has hundreds of islands, ___________ is Taiwan Island.
Be quiet!Our teacher has _________ to tell us.
Nearly________ of the surface of our planet is covered by water.
It's said that __________ is going to give us a lecture.
We had ___________ wonderful time _________the party_______ other day.