You will fall in love with that city _____ you learn about it.
| A．since | B．while |
C．before | D．once |
the trees in that thick forest are so dose together that there is hardly any room to move them.
| A．between | B．in | C．among | D．across |
The speech by the mayor of Shanghai before the final voting for Expo 2010 is strongly impressed my memory.
| A．to | B．over | C．by | D．on |
It is raining .
| A．big | B．great | C．heavily | D．hardly |
When I went up, saw the baby awake.
| A．wide | B．completely | C．very | D．quite |
This new type of TV set is very thin, and it is than a one-hundred-page book.
| A．less | B．not thinner | C．no thicker | D．no thinner |