The computer, help we human beings have stepped into the information age, should be regarded as one of the most important inventions in the 20th century.
| A．which | B．whose | C．with its | D．with whose |
When asked by news reporters , the film star of stage and screen _________that he would pay a visit to America next week.
| A．identified | B．proposed | C．approved | D．confirmed |
The ordinary girl sat silently at the corner , but when the prince came over to invite her to dance , her face immediately_________.
| A．cheered up | B．lit up | C．turned up | D．burnt up |
We spent many years studying the formation of rocks , experiencing many sufferings and even death. But our hard work_________in the end , and we made it.
| A．paid off | B．made up | C．gave away | D．came out |
This is a very interesting book．I’ll buy it，________．
| A．how much may it cost | B．it may cost |
| C．however much it may cost | D．how may it cost |
She is so ___ that no one can ever persuade her．
| A．reliable | B．stubborn | C．artificial | D．intelligent |