I’m not sure whether be has finished writing the book, but he________ it last month.
| A．worked at | B．was working on | C．worked on | D．was working at |
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 |
When I was a little child, Father told me the earth ___ round then sun.
| A．turn | B．turned | C．is turned | D．turns |