China's agriculture has been developing steadily, thus       _ light industry with ample raw materials.

Mr Black decided to give up his farm and devote all his time to______ those children living on the streets.

When I visited the city of Rome，I found the buildings，squares and parks _____________in very different styles．

The specialist      at the meeting will give us a lecture next week . 

Everyone had a form in his hand, but no one knew which office____．