This area is rich in coal，so habitants here use tons of coal to _____ electricity.

They own two cars, not to _____ a motorbike.

Generally speaking, young people  can easily  ______ the new life abroad.

Hearing the old man’s report, the officer _______ from his seat and said something must be done to ________ people’s living standards.

We have a high regard for Mr. Smith because he always tries to _____________his principles.