18．---I can’t recite the poem．
---Well, you are supposed _____ it many times yesterday evening．
| A．to read | B．to have read | C．reading | D．having read |
【2015·福建】_________ more about Chinese culture, Jack has decided to take Chinese folk music as an elective course.
| A．Learn | B．Learned | C．To learn | D．To be learning |
【2015·陕西】Back from his two-year medical service in Africa, Dr．Lee was very happy to see his mother______ good care of at home.
| A．taking | B．taken | C．take | D．be taken |
【2015·陕西】After receiving the Oscar for Best Supporting Actress, Anne Benedict went on ______all the people who had helped in her career.
| A．to thank | B．thanking |
| C．having thanked | D．to have thanked |
【2015·天津】______in painting, John didn’t notice evening approaching.
| A．To absorb | B．To be absorbed |
| C．Absorbed | D．Absorbing |
【2015·天津】______ for two days, Steve managed to finish his report on schedule.
| A．To work | B．Worked |
| C．To be working | D．Having worked |