---Are you satisfied with the result?  ---Not a little .It couldn’t be ____.

This pop star is very ______ with young people, who like his songs and style. 

The scientist corresponds with colleagues in order to learn about matters ______ to her own research.

We must make sure that public facilities in the newly­built buildings，like the restroom and the lift，are________to disabled visitors.

—How much is _______ for a schoolbag? —Experts say students should carry_______ more than 10 or 15 percent of their body weight.