Dina, ______ for months to find a job as a waitress, finally took a position at a localadvertising agency.

 My sister, an inexperienced rider, was found sitting on the bicycle______to balance it.

Many people think any government's work should be evaluated ______ on citizens' happiness level．

The boy whose mother was out for business hurt a finger,          an apple into pieces.

He tried to run away from the police and was charged with ____ arrest.