Could you tell me how long ______the book —Three days.

___1___ is known to us all is that China has launched Shenzhou VII spaceship, ___2___ made the country’s first spacewalk successful.

Mr. Wang’s never been to Canada, has he—. He went there on businesslast week.

That evening he ____ ____what he had thought about the research.

It’s said that ________ gains from house salesshould pay the individual income tax