The last time we had great fun was _____ we were visiting the Water Park.
| A．where | B．how | C．when | D．why |
Since there is no such thing as a free lunch in the world, one million people of the city decided to build their home by themselves.
| A．a; the | B．/; / | C．/; the | D．a; / |
____is known to us all is that the 2008 Olympic Games will take place in Beijing.
| A．What | B． It | C．As | D．Which |
I found many people ________ on the benches at the end of the day，chatting.
| A．sitted | B．sitting | C．seating | D．seat |
Tom is _______ to miss the early bus because he got up late.
| A．possible | B．Probable | C．likely | D．maybe |
They considered___ a computer, which was considered ___ a great help in their work.
| A．to buy；to be | B．buying；being |
| C．to buy；being | D．buying；to be |