I think ___ good knowledge of English is ___ great help when you are traveling around the world.
| A．X，a | B．a，a | C．a，the | D．a，x |
While she is a lovely girl, she be extremely difficult to work with.
| A．may | B．must | C．should | D．can |
A dictionary is necessary if you want to learn English, so you’d better buy .
| A．this | B．that | C．it | D．one |
.It was after careful consideration we decided to take action.
| A．which | B．that | C．why | D．when |
his body and soul to bringing up-to-date technology and international attention to China’s AIDS problem, Dr. Pavid Ho, born in Taiwan, spent little time with his family.
| A．Devoted | B．To devote | C．Being devoted | D．Devoting |
.All these changes will lead to stronger China, country that can surprise and enrich our planet.
| A．a; a | B．a; the | C．the; a | D．the; the |