All of the guests by 9 o’clock , but the host until 15 minutes later .
| A．arrived ; didn’t turn up | B．had arrived ; didn’t turn up |
| C．arrived ; hadn’t turned up | D．had arrived; hadn’t turned up |
_____ worries me is _____ we’re going to pay for all this.
| A．It, that | B．That, how |
| C．What, how | D．As, that |
I’m afraid we can’t have coffee; there’s _____ left.
| A．nothing | B．none |
| C．no one | D．no any |
The classroom is almost empty, where is _____?
| A．someone | B．anyone |
| C．everyone | D．no one |
Don’t go to _____ places where there is no fresh air.
| A．such | B．so |
| C．those | D．which |
Energy is ____ makes one work.
| A．what | B．something |
| C．anything | D．that |