It was three years after the first satellite launching that a （spaceship) containing a

But the Bridge was first _____ to the public, almost one year later, after a series of

When he was set free after twenty years in prison, he was amazed ______ the changed world

The purpose of the three－year study is to______.A．find out why some children find it diffi

He said the theater ______ soon after its three－year redevelopment program.A．will reopenB．

Mary has just returned to the USA after studying in England for three years. She decid

It was three weeks later ____ he heard the news.A which B that C after D when