They _______ on the program for almost one week before I joined them,and now we _______ it as no good results have come out so far.
| A．had been working; are still working |
| B．had worked; were still working |
| C．have been working; have worked |
| D．have worked; are still working |
Progress so far has been very good.______，we are sure that the project will be completed on time.
| A．However | B．Otherwise | C．Therefore | D．Besides |
The water froze inside the pipe，causing it to ________and burst.
| A．expand | B．export | C．reduce | D．behave |
New ________ show that the economy of our country is continuing to grow.
| A．welfares | B．Nationalities |
| C．statistics | D．schedules |
—Would you rather_______ there tomorrow?
—No. I’d rather he________ there instead of me.
| A．to go；will go | B．go；went |
| C．go；will go | D．going；shall go |
A modern city has been set up in______ was a wasteland ten years ago.
| A．what | B．which |
| C．that | D．where |