We are _______ at the rapid progress Mark has made in this semester.

Pinetreesareusuallybelievedto_______coldweather.

We won ’t allow any foreign country to _______ in our internal affairs.

Wecannottrusthimanymorebecauseheoften________hisduty.

All the memories of his childhood had _______ from his mind by the time he was 65.