By the time I realized it was a hoax, it _________ me_________ so much.—-Poor you!

The book about environment ______ the importance of protecting the earth.

How about the debate held in your class —____.

Was it under the tree ______ you went away talking toa friend—Sure. But when I got back there, the bike was gone.

When Nanjing Metro Line 3 came into use, it became much to travel from the north of the Changjiang River to the city centre.