His father in this factory since he here in 1980.
| A．has worked, comes | B．worked, came |
| C．worked, comes | D．has worked, came |
The trip is only two days from flow．We’d bettera plan about it．
| A．catch up with | B．get on with |
| C．go on with | D．come upwith |
The thief was last noticedthe office building by the back door on the screen．
| A．enters | B．entering |
| C．entered | D．to entering |
The scientist devotedmuch time toon the 9roject that he succeeded in the end．
| A．so；working | B．so；work |
| C．such；working | D．such；work |
the sun was not yet up，many people were already taking exercise in the square．
| A．As | B．If | C．Though | D．Until |
Theof some wild animals reminds us the problems on environment．
| A．loss；of | B．loss；of |
| C．loss；that | D．loss；to |