选词填空（共10小题；每小题1分，满分10分）

We can’t finish the work _____________. We need your help.
I haven’t seen your uncle since he _______________.
The small house ________________ a tall building already.
My grandfather enjoys ___________ with his friends in the garden.
How long _________   the airport ______________? Since 1990.
The place ___________ be the home of wild animals , but now it changes.
Our city ______________________ since 1990.
We ____________Beijing two years ago.
Shanghai was not so beautiful _______________as it is now.
___________, the school life in China is different from that in Britain.