---Who is _______ man with a ponytail (马尾辫)under the tree ?--- Sorry, I don’t know. But I think he must be ______ artist.
The factory has been closed a year ago.
There_____ a hospital in my hometown fifty years ago.
---Mum, may I go out to play football this afternoon? ---You can if your homework .
---Now the air in our hometown is even than it was before. ---So we must do something to stop it.
_______ some ways , there are many changes in our hometown .