Only after _______ did people know it was not an accident, but an attack of some kind.
| A．the second tower of the World Trade Centre was hit |
| B．did the second tower of the World Trade Centre fall |
| C．was the second tower of the World Trade Centre hit |
| D．the second tower of the World Trade Centre was fallen |
---Is this book_____ you bought in the bookstore?
---No, mine is yellow. It _____ Sally, I think.
| A．that, is belonging | B．what, is belonged to |
| C．the one, belongs to | D．which, belongs |
---How are you prepared for the new project?
---We have done much but a lot of equipment ______.
| A．is remained to buy | B．are remained to buy |
| C．remains to be bought | D．remain to be bought |
---How long have you been here? ---About half an hour, Jack ______me here.
| A．had driven | B．has driven | C．drives | D．drove |
I can still remember the first day _____I spent at school _____it were yesterday.
| A．that, even if | B．which, even though |
| C．/, as if | D．when, as though |
________an advertisement says, remember that there is ________as a free lunch in the world.
| A．Whatever, no such thing |
| B．What, not such thing |
| C．However, no such thing |
| D．how, not such thing |