He is ___________ to go to school now.
| A．young enough | B．enough young |
| C．enough old | D．old enough |
The factory has been closed a year ago.
| A．already | B．since | C．for | D．yet |
There_____ a hospital in my hometown fifty years ago.
| A．had | B．was used to | C．were | D．used to be |
---Mum, may I go out to play football this afternoon?
---You can if your homework .
| A．is done | B．will do | C．has done | D．will be done |
---Now the air in our hometown is even than it was before.
---So we must do something to stop it.
| A．better | B．dirty | C．more better | D．worse |
_______ some ways , there are many changes in our hometown .
| A．At | B．To | C．During | D．In |