Professor Smith, along with his assistants, on the project day and night to meet the deadline.
| A．work | B．working |
| C．is working | D．are working |
Mr. Yuan is______ about making predictions about the success of the farming program because it is so important.
| A．curious | B．creative |
| C．cautious | D．content |
Life is like a mirror. If you smile at it, it will smile back at you ; if you frown at it, you will get an unhappy look _____.
| A． in return | B．in place |
| C．in response to | D．in common |
In the abundant content of the Poetry Garden in Tang Dynasty, the __________of window is rich and colorful, which is really a feast to the eyes of its readers.
| A．direction | B．description |
| C．application | D．Instruction |
Most of the students haven’t finished their papers on time for __________reasons---one of which was that they carried out a week-long investigation in the countryside.
| A．previous | B．accurate |
| C．original | D．various |
The government is devoting resources to establish public health systems. _________ , the physical conditions of children have improved greatly.
| A．However | B．Meanwhile |
| C．Nevertheless | D．Otherwise |