_____to his research work, the professor cared little about any other things．
| A．Devoting | B．Devoted | C．Having devoted | D．To devote |
---Do you often stay up?
---No. I always get a good night’s sleep _______ much work I have to do.
| A．whenever | B．however | C．whatever | D．whichever |
Born and ______ in Central China’s Hubei Province, Wang Luoyong learned Peking Opera at the age of 11 in Hubei Experimental Peking Opera School.
| A．raising | B．risen | C．raised | D．being raised |
Parents ___ much importance to education. They will do their best to give their children that priceless gift.
| A．attach | B．pay | C．link | D．apply |
When it ______ research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.
| A．refers to | B．related to | C．comes to | D．talks to |
Would it be ___ for you to pick me up at four o’clock and take me to the airport?
| A．free | B．vacant | C．handy | D．convenient |