________is known to us all is that the 2012 Olympic Games will take place in London.
| A．It | B．What |
| C．As | D．Which |
abstract
| A．parent | B．expand | C．acre | D．adjust |
exhaust
| A．exercise | B．exist | C．excuse | D．exhibition |
steady
| A．treat | B．colleague | C．meant | D．breathe |
bathe
| A．throat | B． thunder | C．gather | D．bathroom |
--- Are you going to the concert tomorrow?
--- ___________I’m not sure whether I could finish my paper before that．
| A．Come off it | B．You’ve a point there |
| C．It depends | D．In my opinion |