Each member country of WTO must _____ its laws and regulations and compete on the principle of fairness and co-operation.
| A．reply to | B．correspond to | C．relate to | D．submit to |
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 |
___houses were knocked down in the earthquake
| A．A great many |
| B．The number of |
| C．A great many of |
| D．A great deal of |