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1. He is supposed     (arrive) an hour ago,but he hasn't turned up by now.

5. Speaking of all the songs he has written,I think this is probably his        (well-known) one.

1. 在新設(shè)備被引人之后，他們今年生產(chǎn)的機器比前一年生產(chǎn)的機器多兩倍。 

After the new equipment was introduced,they produced        this year than the year before.

8. More than eight million books were printed within fifty years after the          (發(fā)明) of printing press.

3. 和電話一樣，電子郵件在日常通訊中起著重要的作用。 

E-mail,       telephones,      playing an important part in daily communication.

3. He goes to_______ church every Sunday;church he usually goes to has_______ seats for over 800.

3. There are so many people talking in the concert hall that I couldn't concen- trate     the music.