It is said that in Australia there is more land than the government knows _______.
| A．it what to do with | B．what to do it with |
| C．what to do with it | D．to do what with it |
The discussion ________ alive when an interesting topic was brought in.
| A．was coming | B．had come | C．has come | D．came |
Lily， help me put up the picture on the wall， ？
| A．will you | B．don’t you | C．are you | D．didn’t you |
Is this the factory ___ you visited last year?
| A．the one | B．where | C．that | D．which |
What’s the _________ of having a public open space where you can’t eat, drink or even simply hang out for a while?
| A．sense | B．matter |
| C．case | D．opinion |