After years’ study with the help of Professor Henry Higgins, Eliza was able to________various levels of English usages, such as standard and substandard.

The money collected should be made good use ______ the people who suffered a lot in the earthquake.

Seeing their son playing computer games all day, the parents don’t know ______ it.

Parents ______importance to education. They will do their best to give their children that priceless gift.

       with College Entrance Exam slogans, the walls of the classroom look better．