Exercise 39 • Short, medium, and long taxi ridesWorking it outSolutionBeyond the exerciseExercise 40 • Writing dates, reading datesWorking it outSolutionBeyond the exerciseExercise 41 • Oil pricesWorking it outSolutionBeyond the exerciseExercise 42 • Best tippersWorking it outSolutionBeyond the exerciseSummary