In January , 2004, the United States successfully launched “Spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind.
| A．it marked | B．marking | C．marked | D．to mark |
Your new product ________ better if it is advertised on TV.
| A．sells | B．sold | C．will sell | D．would sell |
______ has finished the work ahead of time will be rewarded though we don’t know______ it will be.
| A．Who; who | B．Whoever; whoever |
| C．Who; whoever | D．Whoever; who |
Tom apologized for______ to inform us of the change in the working plan.
| A．his not being able | B．him not to be able |
| C．his being not able | D．him to be not able |
Progress so far has been very good. ______, we are sure that the project will be completed on time.
| A．Therefore | B．Otherwise |
| C．However | D．Besides |
The shooting centre is about 50 kilometers ______Beijing.
| A．south of | B．in south of |
| C．the south of | D．southern of |