From space, the earth looks blue.This is ________about seventyone percent of its surface is covered by water.
Many people agree that never in history _________ a more splendid opening ceremony than that of the Beijing Olympics.
—Did you catch the train?—No. _________,I would have.
I remember seeing the boy somewhere before, but his name _________— me for the moment.
He was _________ when he lost all his money. Luckily, a warm-hearted man helped him generously.
No sooner _________ home than it began to rain heavily.