________is known to us all is that the 2012 Olympic Games will take place in London.
| A．It | B．What |
| C．As | D．Which |
I rememberedthe door before I left the office, but forgot to turn off the lights.
| A．locking | B．to lock | C．having locked | D．to have locked |
Interest is asto learning as the ability to understand, even more so.
| A．vital | B．available | C．specific | D．similar |
—May I help you? You seem to be having some problems.
—, thanks. I think I can manage.
| A．All right | B．No problem | C．It’s all right | D．There’s no way |
Carl is studyingfood science at college and hopes to open upmeat processing factory of his own one day.
| A．/ ; a | B．/ ；the | C．the; a | D．the; the |
After the snowstorm broke out, what should be immediately done is to provide ________ for those people who lost their homes.
| A．occupation | B．equipment | C．furniture | D．accommodation |