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 |
Though___money,his parents managed to send him to the university
| A．lacked |
| B．lacking of |
| C．lacking |
| D．lacked in |
I am sure David will be able to find the library---he has a pretty good___of direction
| A．idea |
| B．feeling |
| C．experience |
| D．sense |
Having failed my French exam,I decided to concentrate___science subjects
| A．to |
| B．upon |
| C．in |
| D．at |
The manager said to the employees at the meeting that everyone must___their attention to efficiency
| A．concertrate |
| B．focus |
| C．pay |
| D．fix |
Large quantities of cotton___shipped all over the world already.A large quantity of bamboo___used for pipes to carry water
| A．has been;are |
| B．has been;is |
| C．have been;is |
| D．have been;are |