—How far apart do they live？
—________ I know, they live in the same neighbourhood.
| A．As long as | B．As far as |
| C．As well as | D．As often as |
It was not until then that I came to know that knowledge ___ only form practice.
| A．had come | B．has come | C．came | D．comes |
He ___ speak on TV tonight.
| A．was to | B．is to | C．will be | D．has |
I ___ a Leaguage member for six years.
| A．become | B．have become | C．came | D．have been |
He ___ Beijing for a long time.
| A．has been away | B．has left | C．has been away from | D．left |
Our teacher taught us that water ___ at zero degree centigtade.
| A．freezes | B．freeze | C．freezed | D．is freezed |