It is reported that the underground system in Changsha now will be open in 2015.
| A．is being built | B．built | C．being built | D．is built |
It seems there are ________people out of work. Something must be done to create more employment.
| A．a great many |
| B．a great many of |
| C．a great deal |
| D．a great deal of |
－It is a long time ________I saw you last.
－Yes，and it will be a time ________we see each other again.
| A．when；before |
| B．after；when |
| C．since；before |
| D．before；since |
How long do you think it will be ________the computer company puts forward a new product?
| A．before |
| B．since |
| C．until |
| D．that |
How long do you suppose it is ________he arrived there?
| A．when |
| B．before |
| C．after |
| D．since |
Traveling ______a speed of 160 km/h，we have covered a distance of 120 kilometers ________less than 50 minutes.
| A．with；in |
| B．at；in |
| C．with；for |
| D．at；for |