It was ______the boy said he almost never did any exercise in the school______ the mother began to worry about his health.
China has hundreds of islands, ___________ is Taiwan Island.
You must have waited here for a long time ,___________you?
Nearly________ of the surface of our planet is covered by water.
We had ___________ wonderful time_________the party_______ other day.
—What do you think of your nephew? —He__________ be very naughty but at the same time you poor.