That art center is _______ used to be a factory, ______ millions of tractors were produced.
| A．what; where | B．where; where | C．what; which | D．where; which |
----I’m sure Andrew will win the first prize in the final.
----I think so. He for it for months.
| A．is preparing |
| B．was preparing |
| C．had been preparing |
| D．has been preparing |
environmental damage is done, it takes many years for the ecosystem to recover.
| A．Even if |
| B．If only |
| C．While |
| D．Once |
---Could you do me a favour?
----It depends on it is.
| A．which |
| B．whichever |
| C．what |
| D．whatever |
There have been several new events to the programme for the Olympic Games.
| A．add |
| B．to add |
| C．adding |
| D．added |
tomorrow, our ship will set sail for Macao.
| A．However the weather is like |
| B．However is the weather like |
| C．Whatever is the weather like |
| D．Whatever the weather is like |