This chapter is so difficult to ______ that I shall have to read it again later.
| A．read | B．know | C．find | D．digest |
Some of us remain________at our computer for hours every day，forgetting moving our body.
| A．seating | B．seated | C．sat | D．sit |
The tanker，which was full of petrol，________and gave off heavy and dark flames the moment a truck knocked into it.
| A．blew up | B．put up | C．turned up | D．brought up |
She drove so fast at the turn that the car almost went ___ the road.
| A．on | B．along | C．from | D．off |
We believe ________ we can find out the wonder drugs to H7N9 bird flu.
| A．when | B．whether | C．what | D．that |
For more information about the job employment ad.，please________our website on the Internet at www.state.gov or telephone 619－5886.
| A．pass away | B．call up | C．refer to | D．put up |