With the guide _____ the way, we finally got to the village which we were looking for.

 In the reading room, we found her seated at a desk, her attention ____ on a novel.

Years later, he returned home, unexpectedly the old tree of his childhood__________.

As is known to all, Montreal is the second largest French-speaking city in the world, _______.

With trees and grass_____ about 35％ of the urban area，the city of Hefei has taken on a new look.