Xiao Li _________ his hometown for ten years．

_____ is known to us all that the 2012 Olympic Games will take place in London．

Susan thought ____not easy to answer all these questions.

The little boy is very brave. He ______ through the jungle with us last week.

What a beautiful city our hometown is! There are many trees ___________ of the road! — Yes, and ____________ of the trees is growing larger and larger.