When paying for a taxi, he never looks at his wallet –just takes out one note ____ and hands it over.

A. by accident        B. on occasion      C. at random    D. on average

When paying for a taxi, he never looks at his wallet –just takes out one note ____ and hands it over.

1. A.
   by accident
2. B.
   on occasion
3. C.
   at random
4. D.
   on average

When paying for a taxi, he never looks at his wallet –just takes out one note ____ and hands it over.